This is the easiest way to completely remove a FoilMount from a board or other surface without damage to the mounted surface.  It is a fairly quick and easy procedure consisting of two steps.  

Removal Procedure:
Step 1: Use the included water chisel with you garden hose to cut through the foam adhesive between the FoilMount and the board or mounted surface.  Make sure to apply some pressure on a mounted mast to help wedge the FoilMount up while you're chiseling.  

Step 2: Use the included rotary eraser with a corded or cordless drill to get all residual adhesive remaining on the surface.  The cordless drill adapter is included. 

Below are the two instructional videos for this process.