I own an '02 503 fanner with a 10.5" simmons gen 2 and a 136". The sled just rips through the deep. With the wide front ski it just floats amazing. Ride a little forward and it stays on top real well. You'd be surprised what the little fanner can do. I have an '03 with the factory ski and it doesn't float near as well, but fun just the same.
cwh