Ray Klefstad's notes on freedive spearfishing from
        1) "Blue Water Hunting and Freediving" by Terry Maas
        2) other freedivers (mostly via the Freedivelist)
        3) personal experience

Scope: Southern California Islands and Baja

freediving gear
    wetsuits
        custom-fit skin-in full suit 3 mm (summer) to 5 mm (winter)
        1/8" attached hood with skin seals around face
        kneepadless is for best comfort while freediving
        slack in neck section can aid in visual scan
        use 1/3 hair conditioner to 2/3 water in spray bottle for lubricant
        good brands: Esclapez, Deep Thought, M&B
    booties
        1/8" to 3/16" thick skin-in shooter sock bootie
        Kevlar sole helps the bootie last longer
        be sure your fins fit over the booties you plan to wear
    gloves
         reinforced palm and fingers: US Divers Islander, Oceanic?
    mask
        low-volume mask
        good fit is important
        skirt must be opaque (black) to prevent light entering from sides
            (light will reflect off inner side of glass making it hard to see)
        someone suggested filling extra space with silicone rubber
        brands: Cressi-sub Super Occhio, Esclapez?
    snorkel
        short with large bore attached to mask with silicone 8
        brands: US Divers Impulse (the one with the beehive on top)
    fins
        long-blade, full-foot fins
        softer for weaker diver for shallow, long duration dives
        stiffer for stronger diver for deeper dives of shorter duration
        brands: Esclapez black or green, Cressi-sub Rondine Gara or Gara 2000
    weight belt
        try to have it rest on your hips instead of your waist to reduce
            stress on your lower back
        keep streamlined to avoid tangles
        rubber webbing belt with trident stainless quick-release buckle
        use 1.5 lb weights spaced evenly
    knife
        attach to fore arm or leg with quick release bungie
        keep knife sharp, blunt tip may prevent stabbing yourself

spearfishing gear
    spearguns
        oily wood like Teak is good
        enclosed track for longer arrows powered by 3 or more bands
        open track ok for shorter arrows powered by 2 or maybe 3 bands
        handle about 12 inches forward of butt
        rear trigger mechanism for longest band stretch
        balanced just in front of the handle
        no safety, you'll forget to take it off, uncock the bands for safety
        high-modulus bands retain their energy longer
        use Technora, nylon, or steel wishbones
    floats
        inflatable floats are compact and great for travel
            but air compresses when pulled underwater
        Divinycell foam floats work the best (try to keep it strong and light)
    floatlines
        long enough for your deepest dive plus about 10 feet
        bungie made from Mullins material with 1000 lb Spectra inside
        cheap: 5/16" vinyl tubing with 1/8" paracord or tunacord inside
        cheapest: yellow poly line (really not very good for fighting fish)
    reel
        good for hunting in kelp, paddy hopping, or diving deep reefs
        medium-stiff 1/8" thick 540 lb test cord is ideal for fighting fish
    shooting lines
        use about 2 1/2 line wraps around the gun
        fin-attach shooting line is better because slide rings can break
        mono:
            300 to 500 lb test mono attached, double-crimp each end
            be sure not to pinch crimp at ends - it may damage mono
        cable:
            PVC coated 49 strand s.s. cable 1/16" steel with 3/32" coating
        replace shooting line that has any fraying, nicks, or rust
    attachments
        locking bow shackle, longline clip to attach floatline to float
        use same or pigtail swivel to attach floatline to shooting line
        be sure connectors are at least 300 lb test
    spear tips
        detachable with 3/32" diameter 49 strand stainless steel cable
        Kitto or Alexander
    fish clip
        attach to float (or waist if you don't have sharks or sealions)
        use stainless clip or wire with T-toggle
        Homemade: drill hole in old s.s. knife to use as T-toggle

diving techniques
    relax
    hyperventilate mildy - about three quick but deep breaths, exhale completely
    break seal with snorkel to prevent noise
    dive downward with minimal effort and noise
    employ about three power strokes at start of dive then glide down
    coast downward for deeper dives, head down, then flare to level off to stop
    hover motionless as long as comfortable
    don't make any sudden movements
    use speargun butt to push yourself off bottom and give yourself a good start
    head upward with minimal required effort
    breathe slowly for at least 10 breaths on surface to recover

hunting techniques
    general skills
        target practice for best results
        pretend you're not hunting and have no gun, fish can sense a threat
        stalking
            move very slowly and quietly
            use kelp and rocks for cover
        watching for fish
            scan 180 to 360 degrees
        try attracting curious fish by waving a white glove or strumming bands
        never swim directly towards a fish (unless he can't see your motion)
        try not shooting, just observing, to learn fish behavior
        fish swimming fast or farther away may require following and leading
        avoid getting tangled in shooting line - it could be fatal
    yellowtail
        if sighted from surface, may dive down or away without spooking
        sometimes curious about divers and will come in to check out
        may be attracted by sounds and sights of interesting action
        often at bait boundry outside kelp or structure or on paddies
        best to be down when they come by
        they seem to like areas with lots of current
    white seabass
        often in kelp or at kelp/sand boundry
        they favor the upcurent side of rocky points too
        sensitive to diver motion
        may be attracted to a diver hanging still
        if you must dive on a sighted fish, wait until he passes under you
        will sometimes return to an area a while after spooking
        don't forget to check out shallow water, sometimes they are there
        may be attracted by making a double croak (low A) once per 5 minutes
    calico bass
        often hang in kelp or around other structure
        may be approached by slow stalking
        sometimes appear out of curiosity while diver is down
        often surprised by comming around a natural barrier (kelp or structure)
        you have a millisecond to shoot them before they bolt or drift off
    baracuda
        inside kelp or at kelp bed outside boundry
        best approached by hiding behind kelp or wait for approach
    halibut
        often found in sand around structure (often on upcurrent/upswell side)
        sometimes found at sunset on sandy beaches
        at night around sandy areas near rocky reefs
    tuna
        usually fast swimming
        often found at offshore banks and paddies and near islands
        frequently with sharks
        usually best to be down when they come by instead of diving after
            sighting
        larger ones often come later in the school or swim below smaller ones
        may have to dive to 100+ feet for a shot at a larger fish
    wahoo
        similar to shooting Baracuda, but in blue water
        ignoring them appeals to their curiosity
        they will often check out each diver in a group
        they make one spectacular run, but often tire quickly
    dorado
        similar to yellowtail, but they like warmer water and they jump!
    large grouper or other reef fish like pargo and snapper
        often found deeper (60'+) maybe in caves, shallower in Spring
        use 500 lb test 49 strand steel cable shooting line
        shoot from point blank (less than 8 feet) and try for a kill shot
        fish will head into the rocks after spearing
            often 20 feet deeper than where you shot them
        try to keep fish from getting to rocks
        swim upward immediately pulling shooting line
        these fish have killed many spearos!
    cabrilla
        very sensitive to motion
        must descend absolutely still
        shoot quickly, because you may have only a millisecond to shoot
    sheephead
        smaller ones are too easy to be sporting, but are better tasting
        larger ones (10+ lbs) are harder to approach
        avoid shooting them if you value your speartip