Bow Eye Repiar
Brass tube idea seems good at first, except! If the marine tex is softer than the brass, then all the pressure pulling on the bow eye will be transfered to the hull where the tubes contact the hull. This could cause the tube to wear through the hull in time, ouch! If the Marine Tex is harder than the brass, no problem, great idea, good easy fix, and could have used tubes made of paper too. I know that as soon as any one mentions "drill" some people are already starting to cringe. But those of us who started with old boats already got a lot of practice filling some PO holes. I did think about coating the wood backing with epoxy to prevent the dry rotting, but ran out of time, and shaping the wood was pretty easy and fast anyways. A coat of boiled linseed can be put on almost anytime to help fight the dry rot problem. I used some scrap oak I had around. Color doesn't match any of the other wood in the cabin, but as you know you don't see this anyways.