speaking of waves-in tidal zones things can get really scary during the change-like Hawaii 5-0-In Okinawa-Onna point- sometimes if caught at the turn of the tide I would just intentionally trap the spear (point) in a crevice-hanging out on the surface-diving between waves(the big ones) until the tide came in. Sometimes twenty minutes between phases before the rip would slow down. I learned this after watching two scuba divers-one a marine the other japanese-die-Our rescue attempts failed-they insisted on coming in though we warned them to wait till the big sets passed and the rip slowed down-1985-I think-this could save a life under similar conditions
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