Ain't rigging a boat cool? I wish you luck, there's nothing better than modifying your own boat and then finding out how fishable it is. Here are some tips as far as adhesives and sealers: PC-7 is a 2-part epoxy putty found at smaller hardware stores like Ace or True Value. It is the most tenacious stuff both grip and strengthwise. Use it for filling holes, creating fillets, etc. Good surface prep is a must with it or any adhesive. As far as caulking goes, do not use sillycone (silicone) sealer. Instead use 3M 5200 or Westmarine's equivilent poly caulk. It too, sticks tenaciously and will flex and not peel like silicone.