The north/east coast area is not exactly a hotbed of handy shore diving, my understanding is access is difficult due to distance, private property, entries, whatever. Even if you find a few you want to take a crack at - if the place you're staying doesn't come with tanks and a compressor, you need to figure out where you're going to get tanks? Not much for dive shops around there, let alone any that rent tanks to take off site. The couple places generally mentioned that rent tanks to go are quite far away from there, near Georgetown/SMB. You might want to think about some boat trips from an East end op, and some day trips where you hang out and dive at one of the West Side places with tanks and shore diving.