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Tommy, I am going to through bolt it. If you use the existing interior hole on the Montauk then using a homemade drill block you can make the second hole toward the bow. A backing plate on the interior and you have the original but with two. I am doing it next week and will post pics on my project page. FYI I had to buy 4" stainless studs and weld onto the D studs to make the 7+ inches through the hull. Going to be well worth the effort as I will smile many trouble free years from now.