Lots of good points have been brought up here, to drill or not to drill? The more I think about it, I have not had any water inside the frame just yet. I did have to drill a couple holes thru the frame for my plow mount and have driven thru some water (not overly deep, floor boards only) and have not had any noticible water inside the frame. Hmmm.....not going to rush thru this but will be on the lookout for any sign of frame retaining water!!