Guys i have a question for you. I have purchased a new life raft and cradle (costal commander 6) and i am also in the process of buying a new radar system. Both of them are to be mounted on the hardtop of my boat. the question is this; what do i need to do to seal the bolt holes if anything after drilling them and bolting down the equip? Is there some kind of sealer, silicone or something i should use as i am bolting the stuff in place? I will not be doing the job for at least another week, maybe two, but want to get everything prepared. thanks