$180 seems high ...they charge more for items over s certain dimension but I sent a ducky and gear in a bicycle box 5' by 4' weighing 51 lbs. from Denver to Ohio for 68 bucks on Fed Ex...bigger item but less distance should mot be that much more
Try this. Wrap the boat in a plastic tarp, with foam or cardboard at the bow. Wrap a whole roll of duct or gorilla tape all over it. Take it to FedEx and ship it FedEx ground. I sent a play boat from western Washington to Colorado for $60 that way.