I've towed and launched boats with my truck and technically there should be no problem towing a boat to your destination with your MH but I would highly recommend that once you get to your destination you disconnect your boat and park in the campground overflow parking and find someone at the boat ramp willing to use a truck to launch and retrieve your boat for you. You just won't have the maneuverability or visibility to navigate a boat ramp.
Your MH has at least six feet of real estate behind the dual tires. Depending on e terrain you might find that as you climb an incline your bumper / hitch might drag. My 30ds has scrape bars mounted on the underside but even with them i crunched the trailer connector and had to replace it after climbing up a steep driveway.
FR has since moved that connector so it's not the lowest point.
You are free to do what you like but my opinion only...is not to try to launch a boat with a MH.
2014 FR330 DS