Mate who just runs 2wd Utes has them with the limited slip and I've been Impressed were he can tow his work trailer with it.
A 5.2mtr power boat is not that heavy.
Just looked up a 6mtr glass boat Inc Trailer is approx 1500kg as assuming the posters looking at a 5.2mtr alloy boat its going to be way lighter so not a big deal for any 2lt or small turbo engine car. Have raced a number of trailer sailers 18-22' with front drive cars not ideal but it works if you take your time.
Vw tiguan 1.4 turbo is rated to tow 1800kg towing and day to day would be much nicer to live with than a ute.
Thats the one problem with Utes is that they are not that nice to live with day to day, particularly parking in urban areas.
Z