Not a dramatic piece of work, but one I am glad I have completed. When I bolted on the new winch and halyard stoppers on the cabin roof, I had eight bolts protruding from the ceiling below, in a position where I could easily rip my head open. I have hacksawed back the long ends of the bolts (not that easy as I had to crouch whilst doing it) and then fitted a plywood cover over the remaining nuts. This is just an 18mm piece of marine ply, which I hollowed the back of using a plunge router. The ends of the ply are rounded off, so now I might still bump my head, but my brain, such as it is, might be left intact a bit longer.