Why should the A class be limited to developing radius lifting foils only {banana boards} ?
Wouldn't a simplified A foil type configuration on canted hulls further sailing craft development moreso.
I realize C Class development allows this type of development within its 14 ft beam limititation per C Class rules and some may argue foil development can occur in that very expensive racing class .
Given that and the fact that the A class seems reluctant perhaps it is time to resurect the 18 square class as the foiler class or perhaps a new 20 ft development class for that purpose .
The catamaran version of the Moth class in effect .
What was described previously was a simple version of the A foil that could be built stationary or retractable in 2 slots in each box sectioned canted hull .
This would seem a superior configuration or at least one with greater potenial on box sectioned canted hulls .