TOD does great in the sand, and you can use 4-lo once you get kinda stuck. We have a bunch of silt up here which is even worse than sand (its even finer than sand). If you get stuck, don't try to power through it just put it in reverse to get out. It helps to stay on hills, since you can easily back down a hill even when your pretty stuck from climbing. Don't be cruising sideways on steep hills with trees below you, the reason I say this is because a buddy with a Pathfinder slid into some trees the other weekend. He wasn't used to having a "heavy load" in the back. He had 2 very obeast women in the back and 1 up front and he tried to do a dune he was used to doing, but with all the weight he just started sliding down the hill and ran into some trees. I have never had a problem in the silt, but I also have tires that are made for it.

Have fun!