Great Boat...
I have a 78 27 and love it. The 8hp yanmar is a bullet proof engine although it may be under powered for the coast. You may have problems making headway in a tidal current. The boat is solid but I would have a survey done. I agree that the condition of the boat is dependent on the previous owners care. Generally speaking it is comfortable and roomy for 2-4 people. I have done many upgrades to mine since it was a very basic boat. Added 2 batteries for house, 1 for starting, charger, instruments, electric pressure water, to name a few. If surveyor says it is in good shape, they are a good boat for the maoney.