I have an inland chubby 4'0" (old board) It currnetly has two fins placed 12" from the tail. I am looking to add a third fin and looking for advise for the location, how far from the tail. I have a large collection of old wakeboard fins and so i plan to go that route. What kind of reinforcement would be needed to spread the load to keep from damaging the board. My ideas ranged from just washers to a metal plate, to routering a channel in the top and inserting a plastic block for the screw holes.
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