I recently got the Zilla Tool from Russel Knives.  The knife blade is great.  Last week we did some perch fishing, planning to let them all go.  We caught one nice one that was deeply hooked, so I decided we would eat him.  I used the Zilla blade to filet the thing and we put him on the fire about 2 minutes later.  I was surprised how well that little blade did on the fish.