Re: can the avaerage fish and ski boats go saltwater?
Oil rigs are way offshore, and would require a much different animal. I live on the Gulf of Mexico and I see every type of boat you can imagine in the water. Everything from 8' canoes to 80' Cruisers. Get the boat that you like the best, however, consider the fact that center console boats tend to sell a little quicker, should the need to replace it or just get rid of it. Nothing sells quicker, around here anyway and I'd imagine up there as well, as a 19-21' Center Console with say a 150hp Yamaha. Plus, they're versatile enough to take the family out pleasure boating, but also do some serious fishing.
When it comes to the Atlantic, in your case, just know your limitations. If you decide to buy a bass boat, for instance, I'd personally not venture more than a 1/2 mile offshore, although I'm sure plenty of guys will come on giving you stories about 20 miles out, etc. etc. But the shallowness of those boats tends to be the problem, in that even in "calm seas", the waves can lap 1'-2'. Plus, the water splashing you constantly will quickly turn off the wife, hence dampening your boating experience!