I have done some spearfishing although it's not usually my primary focus when diving. I use a float with a big saftey pin like device attached to it - that works as the fish stringer, then I attach a 20' line to it which I fasten to my gear with a q. That way the fish are well away from me should a toothy critter decide to have lunch on me. If you aren't comfortable with that, I have no problem leaving the speargun at home. With thousands of dives under my belt, I just enjoy being underwater.