Join Date: Jul 2000
Thanked 219 Times in 206 Posts
Rep Power: 18
Re: to cut or not to cut. that is the question.
An alternative to my first recommendation, is to use extra long machine screws, "coupling nuts", and threaded rod stock. Drill down from the topside into the bottom structure of the coaming; then, counterbore the hole made in the bottom surface to allow passage of the threaded rod and attached 'coupling nut' to pass. Add nuts and washers, Caulk & Torque it all home and youre done.
Coupling nut: Coupling Nuts, Fasteners