Are the snaps in the carpet? You would think that this would be a real easy thing to do but I spent a lot time getting mine installed. Even bough the expensive special tool. This was my second set of carpet so I had the snaps in the floor and had to match the one in the carpet to the ones in the floor.
You'll need to drill a pilot hole and even then I would consider using a counter sink to bevel the top of the hole so you don't end up chipping the gel coat when you run the screw into the floor.