With a caulking gun and sealant - back to boating!
Loctite Marine : www.amazon.com..."
Waterproof: Polyether adhesive sealant withstands saltwater and freshwater environments to form a watertight, flexible seal above or below the waterline
Fast Setting: Paintable sealant sets in just 30 minutes and fully cures in 24 hours
Resilient: Permanently flexible bond does not shrink when cured and does not bubble on damp surfaces
Strong Bond: Adheres to teak and other woods, fiberglass, vinyl, glass, FRP, metal, gel coat, polycarbonate and most plastics
Steel half-barrel (also called cradle) frame caulking gun for 1/10-gal. cartridges
Thrust ratio of 10:1 for use with low viscosity materials
Smooth pressure rod requires less force and is quieter than a ratchet-style pressure rod
Rod retracts after each pull of the trigger to help prevent dripping