yes
They do have storage back there but as the other comment States, I believe that it is for service and repair boats only but I'm not absolutely sure On that . Years ago I had a 17' Grady white getting worked on and it was stored back there but again it was being serviced. If you're looking for storage for a Jon boat, I currently have a large boat slipped in Croydon in Neshaminy State Park Marina And I know that they do store boats of that size that don't necessarily have to be put in a slip. They charge by Foot. I don't know how local you are to that Marina but I'm sure the other marinas further down by Philadelphia boat would do the same.
Yes!! The facility has indoor and outdoor storage as you can see right on the website https://www.philaboat.com/storage and NO its not just for people getting service and repair. I stored my boat there many years.
Best to my knowledge Philadelphia boat supply has a yard but i believe its for service and repairs
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