Thanks! That removable black cowling that hooks out over the knees/thighs...I wonder if one from your scavenge boat would fit the RPM. If I had another to replace mine, I wouldn't mind cutting mine (right side is fine, not left).
I tried it last night with no knee outfitting (cowling taken completely out) in the bony Poudre, class3, and it was comfy but loose. Swam 2x! I'm trying some foam today to pad out knees tightly. Interesting point about heels touching--I'll look at that. I'll test out a Max, too, though I'm only 150 lbs. demo-ed a new zen 75 and found it nice but too buoyant. Seems I like knifing waves!