I bought the boat late last season and did not tow that much. This year, I plan on towing the boat a lot! I have a 2005 Suburban Z71, and I'm not sure if I should move up to a 3/4 ton Suburban (we have seven kids, so a pickup is not an option). The Z71 has a tranmission cooler, but is only rated at 7400 gvw. The boat dry is 4600lbs, the trailer is about 1500lbs, and I see that everyone says to add another 1000lbs for extras. That's right at the limit. The 3/4 ton would move it up to 8400 gvw. With the big car sales around the corner, I'm not sure what the right move is. I would appreciate comments.