I have many problems...
Most noticeable is the need for a flat deck for freeride foiling. And I need a crowned deck for fast windsurfing.
Another is the need to finetune windfoiling by moving the straps. Mastbase, height of boom, fuze length, and ws boards don't come with twin tracks mostly.
And twin track foil boards mostly have flat decks where the foostraps are located.