whaler bow rail
A little late to the thread, and Im not sure how you ended up as this was quite some time ago..
however, if you have not completed it.. and have holes drilled..
If it were my boat or one I was doing for a customer, I would tap a 1/4-20 or or 28 if it is not very thick. . though There should be a good pack of hull and deck putty in that area anyway.. that said you will have plenty of meat to tap a nice bolt into.. especially if you reach metal.
if you need to go larger run it up to 5/16-24.
Be sure to use some UV4000. Additionally Eventually the stainless will marry to to aluminum so be mindful if you plan on removing these fasteners and or head to the coast with the boat, be sure to put a touch of tef gel to the portion of threads mating into the aluminum.
Tell us how you make out.
Ive got all tools and ability to do it for you if you like. -nick
ps.. the newport of the era HAD a bow rail.. shorter and with a visor.. might be an option.
I grew up with the mauntauk. Had an 83 Mercury 70hp and an 89 Mariner 90hp. WE FLOGGED THE SNOT OUT OF IT and it loved every bit. GREAT BOATS and they were tougher than woodpecker lips
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