yes u can carry one in your boat....as long as u have a concealed carry permit... and when stopped on the water or land by a game warden or city cop or whoever give them what they ask to see and your concealed carry whether u have a firearm or not... cause when they radio their station the dispatch will say... GEO fisher no priors blah blah and has a concealed carry... and its a matter of respect to the officer cause they dont know who u are or where u came from or what u might have just did.... when i got my ccdw the officer adminstering the training said always show the law enforcement officer your ccdw.... i keep mine right behind my drivers liscense incase i am ever stopped i will have it handy.... but to get back to your main question yes u can have a firearm in the boat as long as u are in a reciprocal state....