Bimini . . .
Take a look over at the Capri 22 national association site. There are some posts there, though I've not found any pictures yet. Basic approach seems to be to put it behind and above the boom. Doesn't give you a huge one or any cover forward, but if you've got the race package like we do that's out anyway due to the traveler bar in the cockpit and low boom clearance.
Chris
FKTR Catalina Capri 22 #893 "Verboten"
Catalina 16.5 (for sale)