I don't now if he had done that but it seemed a pretty crazy thing to do. Even if the structure is strong enough it will add a huge windage to the boat and if it can take all that wind (I would not count on that) certainly any wave that come through the cockpit will rip it apart.Did you notice that Michael on Sequitur had his dodger/bimini/enclosure up in that F10-11 off Cape Horn? Seems like they're sturdier than anyone thought!
Hey Andrews, I don't see it as a performance problem but as a question of seaworthiness.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.