I also collect. I have 2 slurp guns, but only use them for specific fish, that get in coral and never want to get out. You have to push water at them, they swim into it, and then you slurp. I only use those maybe 1 time every 2 years though. I use nets exclusively. I have several large -2 foot by 2 foot nets with 4 foot long bags 1/4" mono webbing. And for Neon gobies and real small stuff go to the paint store and get some 5 gallon paint filters. It is a real fine mesh bag about 2' deep and perfect size to sew onto a wire hanger. One problem some of you might not be thinking, is some fish-most ,have air bladders, and will die if not decompressed foor hours. I decompress for 3 hours if they come from 50'. I bring them up to 30' and leave them there for a while, while I am diving, then slowly bring them up about 1 foot per 2-3 minutes in the boat. I see many different types at 120+ (Atlantic longnosed butterflies, deepwater blue damsels, other deep water stuff, but they would need much more time than I want to wait for, as I spearfish too. Gobies, blennies and jawfish are fine but angels and butterflies and most others will die if brought up wrong. Steve.