About favorite filleting knives, I don't know. I still use a basic Edge World that I bought at Squidco. It's easy to sharpen after each use, and I think sharpness counts for a lot.
For chopping Sea Monsters on the snout, maybe something with a heavy meat-cleaver-like kukri blade might help. Blunt downward force and the shape of the blade tends to draw the point of impact toward the knife until it's cut in two. I'm waiting for this one to be delivered on Friday:
Other than Sea Monster head-chopping and the next Zombie Apocalypse, I'm not quite sure what else to do with it. Maybe a bad-ass photo prop? Cutting whale blubber into blocks? Might be good for pirates who want to rape, pillage and plunder.
It came to me for almost nothing with an Ebay auction snipe in the last few seconds. I was enjoying a cold beer on a hot day.
Lucky again! More useless clutter, yay!