Tubbies are amazing on x2's. They really make turning an afterthought. Combined with hull shgortening....You never have to "setup" turns anymore, just cut the bars and nail the throttle for the sharpest turns you can imagine....and totally effortless! I cant even stay on my 750 (nontubbied) x2... I get dumped contantly! On the 780 with tubbies, I cant remember failing from a turn.