I'm another one of the group of asymmetric duckfeet. I use both Frogs and zeros. The frogs I can rotate just enough to be tolerable. The zeros are nice because I can tune different amounts of "heel in" on each side. I started by sitting on a table with my legs dangling and tried to eyeball the angle needed for the cleats and spent time clipping the shoe to the pedals and looking down on the set-up.