After seeing how crowded hurricane cliffs were, camped on the left fork after the Windmill trailhead. Gooseberry mesa biking is incredible. The road to the mesa is very washboarded and will rattle the daylights out of your car. The sites are fairly spaced out and have great views. vault toilets at both trailheads but no water. Very strong (20mbps) cell reception on both ATT and T-Mobile. You will need to come from the apple valley side unless you have a very high clearance 4wd car. Smithsonian butte is no joke, I did it in my SUV with 8.5 inches of clearance and I would not repeat it.