Hi Steve
here are my thoughts after reading posts ,
The 22 is a great boat and should be inc espesially since no ht 22 yet exists if the 22 size is a must .
The other options for a Prosail type class are as suggested existing 20 ht designs , The CFR 20 does exist design by Morrelli with huge Smyth sailplan =huge main only and spin.
-The lightweight platform and huge sailplan insure that this type of design could only be sailed by heavier teams {your main requirement } as it reportedly flys a hull in 6 mph winds .
Think 2 are in existance, the designer could fill you in along with Randy on needed revisions and improvements ,part of every cat design developement .
-It is much more affordable, DOES EXIST , and would save design building sail plan time and developement costs , has plenty of room for sponsors logos on the main and spin.-is easily trailerable , and much more accessable and a familiar size to numerous existing competitive teams.
We would find a way to intergrate them into F-20 starts along with larger beam 20s , scored seperately in a 20 ht class or with a rating number at local events for practise and comparison purposes.-great fun
Carl