I am towing a Baja 272 with it (haven't yet though, but wieght is at 95% of the TBSS limits) so I am sure a 22 Scarab will be way under its limits. I tow very little though (200 yards to ramp and back), so I am no judge
Whats nice is the air ride suspension in back. I am told when I hitch up the boat, air will be put in to level it out, sounds pretty cool, my MDX never did anything like that.
If you get one, cut off the resonator and replace with a straight pipe, it will then sound like its meant to.