if you have access to a boat you can take it into the middle of buzzards bay and there is a light house called clevlend's ledge, its about 20 to 25 ft high depending on the tide, try to go during high tide because its on a shoal. Throw a rope around one of the ladder rings and use it to climb up. Sometimes when my friends and I go we wear life jackets just because it is in the middle of the bay so there are usually 5-7ft waves and its not very deep on the shoal, like 10-20 ft i think. Heres a picture