This is a dual purpose adapter plate that will accommodate both the GoFoil Symmetrical deep tuttle and the standard Deep tuttle.  The adapter includes "drop-in" fastening slots for easy in and out while working on any standard 90mm track system including the FoilMount.  The two tuttle retaining holes are slotted and are large enough to fit M6 (GoFoil) or 1/4" (standard tuttle) bolts which will work on most systems. 

This setup includes 1 adapter plate, 2 qty M6x50 Gofoil retaining bolts, 4 qty standard track mounting bolts, 4 qty M8x16mm FoilMount track mounting bolts, and 4 qty brass M8 T-nuts.   

The height of the adapter is about 3” so if your tuttle goes all the way in, your mast will be functionally around 3" longer than slotting the tuttle into the board.  The overall weight of the adapter is 1.4lbs. 

This adapter works on standard deep tuttle foils as well as gofoil tuttle hydrofoils.