Good idea. I already have an air compressor, I can bring the box home and paint it in the garage. Don't know why I didn't think of that.... inhaling too much AwlGrip, probably.
And here's kudos to those folks who provided moral support and suggestions; I appreciate all the ideas, many of which I would NOT have thought of myself, for the paintwork on my boat. I am grateful to all the commenters on this thread. Does she look new? No, honestly, probably not. But she isn't new- she's a forty-one year old boat which looked shabby, but now looks like a nice forty-one year old boat that someone cares about. The approximate total cost of this work in dollars was about two thousand. I think it probably would have cost around ten to twelve thousand to have it done by someone else. It took me eleven weeks of work on my time off and days off. Incidentally, the above figure includes three months rent of a covered shed slip at PNYH, which was the best investment ever in this. This job would have been impossible without the boat being under cover.
I am away for a few days and expect to be back Saturday evening. With a bit of luck, we'll move her back to her home slip Sunday or Monday, and I will now get to do some boating. It's not too late in the year for that.