Purely for gathering fish, frogs, etc. I would choose an inexpensive gig as could be found at Bass Pro's or another location. For even a smaller tool for a PSK, you might want to look at fishing point as used on an arrow at your local archery shop. My Harpoon was designed as a multi-use tool which means you give up a bit here and a bit there to fit more needs such as a small knife. I would have liked to see it priced lower but that is not my department. TOPS is the one that comes up with pricing and since I just thought up the idea and TOPS makes it, that takes it out of my hands.
For those who have gotten one, thank you and I hope you enjoy it. Feel free to let me know what you think, good or bad.