I haven't towed any boats/trailers with the VX, and I don't plan to because it is AWD and the added strain on the TOD system might cause TOD flucuations/issues.
My primary tow vehicle has always been my 1978 FJ-40. I've previously owned a 19' Bayliner Cuddy Cabin which had a single-axle trailer, and it was squirrelly as heck with massive sway (very scary). My current boat is a 19' MasterCraft ProStar 190 Tournament Ski Boat with a tandem axle and it tracks smooth as silk behind my FJ-40 with no issues and zero sway.
My advice-- No, I wouldn't tow anything behind the VX simply because of the tempermental TOD system. In addition; I would highly recommend a tandem axle boat trailer if available for your boat, as dual axle boat trailers track straight and true without any sway.
In my opinion, a trailer tow hitch should only be installed on a VX to serve as a primary mounting point for a "Rear Step Bumper" that fits into the square box receiver hitch (to protect the vunerable rear cladding). Examples of Rear Step Bumper's using square box trailer hitches can be viewed on the photo gallery's of MARLIN and MR. LARRY'S