Ridge Mount Foil

Details 

Ridge Mount
This is the standard mount with a relief cut down the middle allowing for a mount on top of a ridge on the bottom of the board. The surface still needs to fairly flat, but allows for a slight ridge where the

The 2.0 Standard now includes:
-Upgraded
-4 high strength brass or stainless steel slider nuts
-1 set of 4 flat head M8x16mm bolts for Slingshot, Liquid Force, Cabrinha, and most other hydro
-1 set of 4 flat head M6x12mm bolts for Takuma Surf hydro
-1 set of 4 pan head M8x20mm bolts for Moses and older Liquid Force  
(instructions, alcohol pads, scotch-brite pad)

Answer for "Christian": 
The mounting position will need to be flat (no concave, double concave, or tail rocker).  If it is a large enough concave the center of it may be flat enough to mount.  You can check it by taking a