Pete see A-Cat development for this. As lifting foils were added to the platforms, changes to the hull shape were done in the transom. If you went full flying you could avoid this but that isn't the intent of the F16 class rules as I see them.

The average sailor is going to get more out of regular sailing and practice than monkeying around with foils, at least not building foils. I decided against it as my existing hot box fits my 66" long boards and that is it.