Distance towing with a square dually - who does it?

[Hulk Will Smash]

Just curious how many guys on here tow long distances with their square duallies?

My truck is an '87 R30 TBI with a TH400 no overdirve. I've had a couple guys call me about my ad and both wanted to use it to tow a boat from SoCal to Havasu and back on weekends... I was kind of taken aback by that. I drive my truck three or four days a week, but mostly around town. Only on the freeway occasionally and when I do, the thing spins 3,000 rpms at 65mph. The truck runs great but I couldn't imagine doing a 500 mile freeway trip in one of these trucks. I'm guessing it would cost north of $350 in fuel and probably drive you nuts spinning that kind of rpm for 8 hours!

Just curious what everyone else thinks on this one. Maybe I'm being unreasonable with my expectations or people's tolerance for that sort of thing?