well nothing is better than glassed in holds, but you should know that. Sounds like ya got an sxr so ya dont wanna do anything real redneck, but ive heard of screwing and glueing in hockey pucks, you could find some rubber to screw in to add material, heck you could cut and shape a piece of wood to work real nice but I wouldnt do that. If you live near a surf or windsurf shop putting in some windsurf bindings is your best bet. Other than that, just jump the wakes and then get holds in the future. Ya dont wanna put holes into your ski that arent necessary and soak the foam.