I think the issue of wingmast vs. teardrop shaped mast on beachcats still is undecided. The latest showdowns between Blades and Stealths at least seem to imply so. The wingmast do produce less drag and possibly higher lift, but getting it in the groove is the hard part.
I have heard that the A-class mast has become more wing shaped, but dont know how they compare to the Superwing.
This is one of the reasons why the Zandvoort event next august will be so much fun (Robi, start working on your better part to get funding)

John, if you want to go F-16. Get or even homebuild the hulls and foils, and put any comparable rig on it and get on the water! In the end, time spent well on the water is what is important (both in competition and recreational sailing).