Oh, and for the record, I think that control system design should be unrestricted, both for safety's sake and because of the difficulty noted above of defining "manual" and "automatic." If you are going to race go-fast flying machines, deliberately introducing unknown risk by crippling control mechanisms is beyond stupid.
Personally, I have not made my mind yet on this matter... As much as I admire technological innovations, and clever, efficient solutions like the stability control system that was NOT installed on US Oracle ( "evidently","hard work" was all that was needed !
Somebody in a previous post had said that, nowadays, the general public is not required any more to understand the inner workings of what they use, in order to accept it... I am not sure that this will be the case in the prospect of a fully automatic foil control system on board of a sailboat, even if it will be required for security reasons. They will just say "Let us restrict the maximum speed, built smaller, less sophisticated and slower sailboats, so we will get rid of those extra-sailing devises...". - to most people, sailing is supposed to be a "traditional" sport, and not a "high-tech" sport, like F1, for example. Those flying boats are already too "high-tech" regarding their structure for many sailors, so I am afraid that if they will become too 'high-tech" regarding their control, too, they will have a hard time to find the much broader audience we all wish.