Re: how far and where
Ahhh! You do know that the Coast Guard charges you for the helicopter, don't you?
I had a friend that went out miles in a 17 foot Whaler. He traded up to a 25 footer. Tell you something?
I circumnavigated manhattan Island, N.Y. in a 15 footer. As long as it is calm and there is no traffic it's OK. I also took my 15 footer up the Hudson to Canada. Weather blew in on Lake Champlain and scared the livin' bejesus out of me.
BUT: with a 15 footer in the Atlantic? The swells are bigger than your boat. As a matter of fact, the fish are bigger --LOL. And, as I understand, running some of the inlets to get back can be really dicey in a small boat. It is a good bet that you will take on some water over the bow. The other major problem you will encounter is following seas. Even though the boat has a 20 inch transom, it is narrow and sits low in the water. Following seas will most certainly wash into the splashwell and possibly into the boat. Be absolutely certain you have an operating bilge pump--the bigger, the better.
If you have the guts to venture out, the limiting factor will be your fuel. You can only carry so much in a small boat. ALWAYS use the rule of three: 1/3 fuel out, 1/3 fuel return, and 1/3 reserve. And buy and use a GPS. Every direction looks the same out there.
For the most part, unless the weather is excellent, stay in Barnegat Bay.