I bought the HD Rapala, for me that was a mistake. I used it twice while cleaning fish and had to switch back to older electrics to get the job done. Now it just sits in a bucket in the garage. I prefer the 10inch blades they sell, I have 3 different sharpeners, none do all that well. I've bought quite a few Mister Twisters over the years, for me the cheapest and actually work are the sunbeam $10 turkey knifes they sell at thanksgiving. When it comes to big walleye I prefer to have the 10 inch blades or go regular fillet knife. This method works pretty good when using a regular fillet knife.

http://www.youtube.com/watch?v=DyoK7...eature=related