Cory at Evolution Covers...has a promo going on right now for custom fitted swim step covers for $110 called the "R/R Series". I ordered one today, drew up a template and mailing it to him. I just got a piece of clear plastic, taped it to the swim cover and drew the outline. Told them the thickest area of swim platform and he takes it from there. (they will also send you template material, but i stopped by Lowes and got what I needed for a couple bucks, faster that way). Figure it will keep my swim step cleaner and keep sun off it while towing which will make the decking last longer.
Thought others may be interested. You can contact him @ Cory Anderson.... info@evolutioncovers.com