2gypsies, yea I'm aware that it's going to be a long haul, especially pulling a 35' TT. Our travel days will be Saturday and Sunday, but we will cheat that a little bit by leaving out on Friday afternoon once my wife gets off work. If we can get to Nebraska City Friday evening, then that gives us about a 300 mile head start for Saturday morning. Also there will be at least 2, possibly 3 others with us on this trip including my brother-in-law who was an OTR truck driver for many years. So I'm comfortable with letting him spell me behind the wheel.
As far as the return trip goes, we've got a couple of options. One, would be to move to Colter Bay on Thursday once we are done exploring for the day to give us a bit of a head start Friday morning. The other is the fact that nobody has to be back to work until Monday, so we have an extra return day if we need it.
Padredw, that's not a bad suggestion. I seem to remember an article in Trailer life a few years back that covered that area of Idaho outside of Yellowstone and that sounded like a wonderful area...thanks for the reminder, I'll explore that option.
Kohldad, we did do the black hills 2 years ago (without the TT), we rented a cabin at Cheyenne Crossing just outside of Lead, S.D. We had a great time getting to know the other guests at the nightly community campfires. The Indian tacos at the little cafe next to the cabins are to die for! In fact I still have a large baggie of gravel that I dug out of a local creek that I still haven't panned for any gold.