I got to make it out to Camp-Inn the other day.
Boy, those guys are nice. I wasn't really expecting to see a 12-man teardrop manufacturing plant.
Anyways, I mentioned mounting the jack like this, and I was simply warned to make sure the jack would retract far enough and watch the ball height.
Also, you have to watch how the back of your car opens. I guess some SUV hatches can have a problem with the SUV hatch wacking the top of the retracted jack leg! Also, dropping the tailgate of a pickup straight onto the top of the jack leg sounds like a great dent too.
I am using a hatch-back car to pull most of the time, but I think I will have to make sure the back doors on my van would clear the jack.
-Ben