Talking to some people in the marina buisness I have heard that the slips dont make a large profit. There are alot of expenses that go with owning a marina. Not all marinas use electric meters and dont charge for its use. They also dont charge water usage. These are all bills that have to be paid as well as other expences. Some examples include insurance, Lease fees, dock maintenance, morgage, taxes and all those great expences that go with running a buisness.
Penny bridge has also kept there slip fees the same for either 3 or 4 years now. Whats nice at PBM is they dont make your boat bigger than it really is.
I dont know if they would keep Haverstraw full but everyone there would be happy with there service and Im sure would stay there.