My friend and I made a boat out of cardboard and have been sailing it around in the water by my park. Some family members have voiced concern that doing this is illegal. I live in New York City, I'm not really sure how to even go about researching something like this. Eventually we wanted to make a second to turn them into a catamaran. Does anyone have any clues where I can read up on local laws to see if theres anything I need to know?