Nope, I seen that one.. That is a super modified Townsend! Bolted together at the handle, oversized crank,on a pedestal… The way they clean fish, I can certainly understand their logic, but like posted before.. quite slow. (but, you gotta factor in that this is an instructional video with extra time taken) I bet those 2 guys, could really make hay if they put it in full production mode.
The Townsends work great for Perch of any size, and walleyes up to 18-20″. After that, you gotta take a couple bites to get the skin off. Larger than 24, is hopeless. Just not wide enough.
You can do northerns, but its not much fun.
Gills work pretty good also, but these things are really the cats meow for perch and eating sized walleye..
For me, its all about yield, and this will yield the most meat, if youre any good with the fillet knife to begin with..