You can use a utility trailer. I have one l use for my cataraft. I mounted some deck boards on top of the metal railing. My ramp comes of easy. So l use it for rafting or hauling atv. l even carpeted the deck boards. Plus with a utility trailer, you can unload the heavy things off your boat and put them in the trailer then put raft on top.
I am an American Whitewater member. One of 6300. There are an estimated 100000 paddlers in the U S. If you are not a member you should join. AW is fighting for our rivers everyday and could use some help.