This is what we saw at the North American F18 this year. Misha said on the last day he drove is bows in two to three times on the last run down wind on Fri. (but didn't flip) bare in mind that of the 23 boats that did go out friday only 5 managed to avoid going over. And I'm almost certain that of the 5 that didnt all three types of boats were included. Some of the new Nacra Infusions had some problems. some of which being, daggers not fitting into dagger well,requiring some filing to the dagger. Also a dagger blew while in use. On Fri someone on an Infusion running down wind had mast fold. And two of the Infusion had some minor collision and took on water.