Originally Posted by TURBS
Ici will say call the company that built your unit.
That's not what they told me when I wanted to add one of their flip down racks. They asked for the manufacturer and model number of the trailer, and the info on the LCI frame sticker. It took 3 days but an engineer called me back. They told me I could use one of their fold down platforms. I ended up making my own for less than 1/2 the price. However, he would not comment on what the warranty ramifications were, and avoided that question like the plague.
They would love to sell the OP one of those boat receivers, that's why they make them, sell them to the general public, and tell you to contact them if you need assistance finding one that will fit your RV. I highly doubt they would recommend towing a boat, but for some reason they do call one model a "boat receiver".