Towards the end of this video shows why the above boat pitch poled. Looks like there is so much drive from the sail it can force the bow of the boat under water when they hit even a small wave. Seems to slow them down a bit rather quickly leading to some exciting times. Just think if these 40' boats are so 'exciting' what it's going to be like when the real Cup boats get out there. Don't think I'd want to buy one and convert it to cruising.