My Skiff has one under gunnel 3/4" rigging tube where both my fuel line and electrical wires run through. I'm installing another one under the other gunnel to separate the wires from fuel line as a need more room and having both just doesn't sound like the best idea IMO. The original tube has Gelcoat over it When built my Ankona. Is the tube just a Home Depot 3/4" PVC tube or one of the other plastics which paint sticks to much better? My plan would be to sand down the Gelcoat to bare fiberglass, attach with PVC cement, scuff the tube, coat with resin, sand and apply the Gelcoat. Right way or wrong?