There is a thread on the Ocean Rodeo forum that gives instructions for reparing a Mako with suggestions on type of epoxy. I tried repairing mine; the repair area held but the delamination then spread to a new area as the board seemed to loose its structural intregity after the first delam. Mako's are a great board but appear to have this problem....
http://oceanrodeo.com/forums/viewthread/2365/