RE: Paint on a steel boat
If the outside of the hull is lacking then I would make an effort to look at as much of the inside of the hull as possible. Take a light and look at as many of the hidden areas under the floor, around and under holding, water and fuel tanks. Any dirt or even scraps of metal, don't laugh I found it in my boat, will hold moisture and cause rust which you won't see until you have a leak. Finding it now instead of 34 years later, as in my case, will cause you less problems in the future. Replacing steel plate in the bottom is no fun and unless you have access to a good welder who knows what he's doing expensive. So take some time and do a really thorogh search of all spaces and know what you have.