I junked out a 15' tri hull a while back. our garbage company has a transfer place for people to dump the trash that wont fit in a garbage can. I didnt know if they would take the boat or not. they let me dump the boat. all I did was unhook the boat and go fast in reverse then hit my brakes. once the boat transom was on the floor all I did was pull the trailer out and I was good to go with the trailer. try your local dump.