Hi GS,
We just got back on friday, like you I was worried. Bought the max trax especially for the trip as we were towing a loaded up Complete Campsite.
We went down to 16psi as the sand was hot and dry. We passed 2 bogged vehicles on the way across inskip and 4 coming home (they were heading for the island).
I think if you air down and drive sensibly you will be right, the only piece of recovery gear I used was a shovel, and that was to bury my 8yo.
As we were coming back from a day trip from the western side, Awinya Creek (our favorite side) on dusk we came across a Indian bloke, his wife and a small child bogged to the doors in some type of Honda. He said he aired down to 20psi and seemed to take the deepest part of the track. The track clearly stated high clearance vehicles, radios, experience and water, but here he was with nothing, had a bit of a giggle.
Couple of young blokes turned up and helped him out.
Don't stress, even if you get stuck there will be people there to help.
We made sure we timed the tides and towed the trailer when they were at their lowest, meant early starts and first barge both ways but made for a easier trip. We stayed a fair way up the eastern beach at Cathedrals, Dilli Village is a lot closer and only about 20k up the beach.
Even our first trip across Indian head there were blokes airing down even further and stressing, he took of like a bull at a gate and drove way to fast and bounced everywhere. I found most people seemed to drive way to fast. We just kept a bit of momentum and watched the revs and really just cruised everywhere, most of the time in high range. The only time we went into low was for Indian Head and South Ngkala Rocks bypass, this caught a few people out and closed the track for a couple of hours on 2 occasions I was aware of.
The day we tried to get to Kingfisher there was a bogged backpackers vehicle blocking the track, the only problem they locked the car and walked away, could do anything about it.
I'm sure you will be right and you will get a lot more tips on here from people with more experience than me. Just remember we were stressing a little bit about getting stuck but it was pretty easy.
Good luck,
heaps of fun.
Cant wait to go back, probably have a camp on the western side.
Renno