CNicoll
Guest
I have an old pair of these fins and most of the people I know who have them (me included) just drilled the holes (2 about 3/8 inch each seem to work just fine) near the toe of the foot pocket. I'm not a big fan of having to spray silicon all the time and this method works when you forget or run out of silicon.A hand drill with any typical bit would be fine.
Instead of (or before) drilling holes, another thing you can try is silicone lubricant - it comes in an aerosol or spray pump form at your LDS - a couple of spritzes in the foot pocket before the dive and the fins come on and off much easier. Also, some people like to keep the foot pockets filled with water when they exit, so they can rinse dirt/sand off their drysuit boots after the dive; you can't do that with holes in the pockets.
Folks may argue that the holes are too small to do any good, but they work fine for me and don't compromise the fin in any way.