I use my "PIG STICKER" when I do the first few guided dives with my students. We have ALOT of Bluegills in our lakes, and using the knife to open up little clams and molusks in the sand, make the dive real real fun. The students are there, amazed that they're underwater (Basic OW), Looking at the fish eating some clams that I opened. So yeah, for me, it's needed. It makes the boring lake dive fun and entertaining. I also use the pommell of the knife as a tank banger to get their attention. It works. WOW, A 2 for 1 tool.... Such a deal....
Cheers
Mike
Cheers
Mike