Well i have a 2003 Jeep Liberty 4x4 with the 3.7L v6. It currently tows my 17 foot aluminum with a 50 horse off the back pretty good but i am thinking of getting a bigger boat. I am looking for something in the 17 to 18 foot range like a Sea Ray 175 or maybe even a Bayliner Capri (maybe). My liberty is rated to tow 5,000lb (yea right) and most of my trips will be within the 20 mile radius from my house but i live in the sierras so its ALL going to be up and down mountains. I am pretty confident of the brakes since it'll be mostly below 45mph but i don't know if the jeep could pull a 3,000lb boat (not counting all the junk we bring with) up the hills. With just my aluminum it hunts for gears like crazy. It'll bog down to like 1,800rpm, double shift to 5,000, stay there for half a second, then touch 3,000 and finally back to 1,800. It will pull pretty good if i drop it in second (it actually stays in one gear) so I try to whenever I can. I was reading some other posts on here about the Honda ridgeline and how bad the MPG was towing and i am worried if i pull anything more my libby might do the same thing or just cook the drive train. So do you guys think it?ll be a wise choice to upgrade to the fiberglass boat or not. I am kinda stuck with the liberty as of right now because I just had to drop a $3,000 new tranny in it because somehow the planetary gear gave out in my last one (but its under 3 year warranty now). So let me know what you think.