Went over there today and spoke to them. Can only launch from hangar B. Thats a far paddle to the MPB. I might as well launch from the end of Gerritsen Ave or find a spot in Dead Horse Bay, since that's the main area I want to fish the MPB. Probably possible to launch somewhere from Barren Island too which is even better. That didn't really say "no you can't do that, but if you see someone carrying a Kayak across Flatbush ave, thats me! haha
Thanks for the info Steamboat, you know a lot im suprised you aren't kayaking as well haha.