On that trip I don't think we engaged the 4WD until the rock garden just before Chicken Rock. The trail did not seem so easy in a Tacoma with a FWC in the bed.
Ugly damage and repair alert. The following photos contain an ugly repair to a very nasty looking bit of frame damage.
On our drive north to Fresno on US 99 we crossed a couple of bridges that caused the truck to bounce high and come pounding down. After the second event I glanced in the rear view mirror and it looked like the camper was riding oddly but when we pulled over to check it out everything seemed normal. We drove on to our first night camp which was just a short 4x4 drive from pavement. Once again the camper and bed seemed to be riding oddly. Jan drove the the truck around while I watched and the bed and camper were indeed moving oddly. Once again I checked the airbags, the springs and the reinforced frame over axles, everything was okay. Then I examined the frame in front of the reinforcement and discovered the problem.