Just picked up 2 rod holders from West Marine. Figure if I buy a lil at a time it won't hurt so much. There are some screws in the Gunnel, but they don't match the holes in the bases of the holders. I think I can use 2 of the 4 holes, just need to drill thru instead of using screws. Do I need to put some Silicon between the base and the boat, and fill the empty screw holes with it also? Where is the best place to mount them, right at the back by the Transom or can I put a set a few feet forward and have the rods stick out 90deg from the boat?Sons going for treatments this week and I figure we'll install em next weekend together. Any pics of your holder set-up's would be appreciated.