I'm planning to take the Raven on the road this year, but the longest distance I've hauled so far is about 50 miles (about an hour or so). I have a couple of questions regarding longer hauls (three hours minimum). My tow vehicle is a 2-dr 4WD Chevy Tahoe, 5.7 liter V8, automatic transmission with overdrive. Here goes:1) Everybody says not to tow with the transmission in "drive" because of the possibility of damage to the lock-up torque converter. However, in the next gear down ("3") my top speed at a reasonable RPM is 60 mph. Meanwhile, guys hauling dual-axle race car trailers with similar trucks are blowing right by me. What's the deal?2) Is it OK to tow in "Drive" on the level and downshift manually for the hills?3) how essential is a transmission cooler?I have a hard time believing that the transmission on this Chevy has to be handled with kid gloves when other people are towing similar-sized boats with minivans and small SUVs. Help!PeterH23 "Raven"