[tdw]

We went up the coast of NSW end of last winter, deck awash, saw 35 - 40 knots on one occasion plenty of 30 - 35knots. We had the side curtains rolled up but left rest of the cockpit covers in situ. Didn't get my feet wet until I had to go on deck as we prepared to cross the bar into our destination.

Reduce performance ? Probably does. Do I care ? Not a jot.