Stick with the renzetti knutlaf. It takes a little while to get used to, but once you get your technique down, it's a great tool. I tie all manner of steelhead and saltwater (seahabits, surf candy, etc) flies on it, and I honestly feel that once you get into it, you will find your technique changes to take advantage of its upsides and minimize its downsides.
"I'm not fat, I just have a sweet hockey body!" Eric Cartman