Figured I get a little discussion going in this section since it seems to be pretty dead. Anyway, my parents have a 1999 Mariah Z252 and we need to bring it up to Iowa from the Lake of the Ozarks in Missouri since they recently sold their condo. It's sitting on a brand new double axle trailer and is ready to be brought home. We have the option of towing it with my Rainier or my Dad's 2002 Avalanche. The boat weighs around 4300 lbs. dry, and I'm guessing the trailer to be between 12-1500 lbs. I am not concerned with the weight of the boat and trailer but more so the size of them. Currently the most I have towed with the Rainier is my Camaro on a flatbed trailer and it does a great job with that. I am guessing the weights would be pretty similar between the two setups. I am trying to decide which vehicle, the Rainier or Avalanche, would be best for the job. My Rainier has a 5.3, 3.73's, tune, new brakes and good tires. My Dad's Avalanche is also a 5.3 but has 3.42's, and tires and brakes that could both use replacing. As I stated before, my concern with the Rainier is that it weighs less and has a shorter wheel base than the Avalanche but it's in better shape mechanically and has the advantage of the 3.73 gearing and slightly more power. With that being said, which vehicle would you all choose to do the job? Thanks.