Outboard motor mount bolts
Jeff, I had the same problem as you have. I thought about the possibilities -- even hiring my nephew to crawl back into "no man's land" to accomplish the task. However, what I did was to install deck plates with the screw-out centers. Since my boarding ladder was also loose, I put one on each side of the back wall of the cockpit. Make sure to measure before cutting so the finished job looks good. Now if I need to get at the bolts, all I do is unscrew the deck plate and I'm there. No need to move styrofoam blocks or import midgets. Give it some thought. I used 6" plates. Works great.