Sudbury RULE Elastomeric is the sealant recommended by Triumph Boats for sealing any holes or attachments.  Available in 10 Fl oz. Cartridge in White.

A one-part, fast skinning (10 minutes) and fast curing (24 hours) multi-purpose marine grade sealant with superior strength, adhesion, elongation and life characteristics. Cures in temperatures of -20°F (-28.9°C) to 120°F (-48.9°C) and can be wet sanded and painted after curing. Flexibility and compression capabilities are excellent. Heavy duty use above or below the waterline. Twists, bends, expands, compresses. Seals ports, beds hardware, stops leaks. Resistant to teak cleaners, oil, diesel fuel and salt water. Adheres tenaciously without primers to fiberglass, glass, plastic, metal and wood. Simple clean up with mineral spirits. Not recommended for wooden deck seams or use in areas subject to gasoline.