Hey Terry,
I agree, the boats involved in the invasion were definitely outboards. I don't think the SeaCraft 21's for the government were built till about 1965 or so. As for the competition boats in the trials, don't really know what they might have been. However, I believe Carl started racing the 21 almost right away in the early 60's, and I think Don Aronow and Dick Bertram were some of his competitors. And yes, I have trouble keeping track of my truck keys too!