I was just thinking racing a big tri around the cans is maybe a little different than racing a cat around the cans, especially when it comes to bearing off at A mark. A cat will have two hulls, each has to support the entire wt. of the cat sailing on one hull.

The Tri, on the other hand, is going to be a little heavier per same length, and most likely have smaller ama's with less displacement, so when you do a quick bear-off at A mark, you are pushing the smaller ama (vs. one hull of a cat) down and under water. If you have a cat driver who is used to pushing a fatter hull down harder, and all of a sudden he is on a tri, well, maybe that's what happened.
But that is just a guess, unless we were on board to see exactly what was going on, we will never know exactly what -or who- caused it.

I don't think you can adequately train a mono-racer to top level trimaran buoy racer in less than a full year of hard buoy racing though.

I'll be Randy wouldn't have flipped it... <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />