The trouble is, cats don’t have that third hull automatically trying to turtle the boat. A mast float is generally okay on them, but maybe not so good on a trimaran. The instant you capsize a Weta you have an ama with about 400lbs flotation trying to get back to the water’s surface, so the mast float would be counteracting that to whatever degree possible.
I guess I just need to go get in some deep water and try it. More and more I’m thinking you could never get enough floatation into or on top of the mast to completely counteract the ama bouyancy.