You feel it - it's pretty dramatic...you turn and the only thing that happens is a really huge rooster tail at the back of the hulls. With it blowing about 12 to 15, sail upwind and try to bear away sharply without easing the mainsail and observe the stalling. Do this on a crowded start line trying to duck a boat and observe the odor coming from your crew's shorts. <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />

If you're really cooking - like downwind with the chute up in waves, you can feel the rudders start to lose traction if you turn too sharply.