I was in a similar situation a few years ago - found a 1989 Baha Fisherman in Dunkirk, was operated as a charter boat. Stringers had been replaced, engines had been rebuilt. I had it surveyed prior to purchase, all checked out. The previous owner had taken good care of it, mechanically and structurally. Fished it for 2 seasons before shifting gears to something smaller. No (major) issues, no regrets.
I'd still recommend a survey and sea trial prior to purchase.