If you scored the race by elapsed or corrected time by the day and awarded non starters points = to finisher + one. The ovewall race would remain competitive and shift the weighting from successful starting through surf and more towards sailing the course. If only one boat starts out of 20 then the rest of the fleet drop a point and the race continues. The successful (lucky or crazy) boat would then decide to race the leg and bank the single point or return to the beach and move on to the next leg with no change in fleet standings.