Depends. You want a show boat, or a blood and guts fishing boat? How many coats of paint are on it now? If it’s one and it’s pretty solid, sand off any loose paint and scuff the surface and paint over top. If it’s more than one coat or in really bad shape you may want to completely strip, prime and paint. Either way, bare spots should get a light coat of etching primer. Rustoleum (Tremclad in Canada) works well and can be made more durable with a hardener. There are so many threads on so many sites about this. This is the link to what I did with an old camp rental.
https://www.forum.tinboats.net/viewtopic.php?t=42660
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