towing with full ballast

[bturner]

What could possibly go wrong with a great idea like this......

[LakesideRec]

I would not do it!

The trailer is likely setup to be properly tongue-weight balanced with an un-ballasted boat. Putting an extra 1500-2000lbs of mass at the back of the trailer is a recipe for negative tongue weight and unstable trailer sway that could get dangerous

Also, with a 2wd vehicle, the negative tongue weight could lead to a loss of traction on the ramp and you might not even be able to get it out of the water.

[shag]

Just no... Very unsafe and may damage your trailer.

[SoCal G-Man]

The only vehicle on your list legally capable of towing the GS24 (7800-8200-lbs) or the G23 (8500-9000-lbs) BEFORE adding ballast is the Suburban you listed. If you have a private ramp at your lake house, the mid-size SUVs you listed are fine to pull the boat from the garage and drop it in the water, assuming the hitches can handle it, but towing on a public road would be irresponsible.