Its true that after awhile, you get a bit bored. About a tank of gas should do it(that won't be very long with the revs up as high as they need to be.)
Although we camp out on the dunes, make a weekend out of it. Bring ear plugs because there is no curfew and atv's trucks, sand rails pretty much run all night. It feels like your "Beyond Thunderdome".
As for what I have found to be the perfect set-up?
15PSI, get some valve core removers or you will be there all day airing down. And don't wait until you get stuck...do it right away so you don't get stuck at all.
VDC off. The physics of sand driving mean turning of VDC as soon as you hit the dunes. You are pretty much in one big powerslide the entire time. So it only gets in the way. You are being propelled by sand being forced behind you, not your wheels spinning.
4HI and Drive seems to work the best, however you may need to shift down into 3 once in a while for a steep dune.
Like we say in the Coast Guard "Secure For Sea" otherwise your camp stove is gonna knock you in the back of the head. I liked the seats folded down as well.
A blast indeed, It sounds like a trip is getting put togeather over in the events section? Interested?