Yep Gery thats me!
Very stunning trail, it takes a good amount of seat time to get through, but plan ahead, well all needed that extra 5 gallon fuel can. Also keep in mind, as Todd mentioned, about the water levels. you can easily fine out the depths by calling the DNR field office in Moab. the second crossing is tricky as one must go in, drive along the bank, cross the stream and than come out. If your a smart cookie you'll have scouted it, or have your pal sit on the roof directing you. also note you can bypass these crossings if you like?
At any rate, technically, it is a "bike trail on 4x4 roads." Really it's just a bunch of trails strung together and given a name so it seems different. 4x4 folks will recognize "Rose-garden hill" and "Top of the world" amongst others. Sorry but you will have to do a little black top time, not much though. For you see there are two sections that truly are single track. And to try and camel trophy your way through wouldn't be a good idea.
If anybody has any questions don't hesitate to PM me as (I love this) got paid (yes!) to put in lots of time and research on the Kokopelli expedition.
Best of Trails
ps It's best run from Grand Junk to Moab. and lastly by all means read up on this little deity called Kokopelli it makes for some fun fireside chats