Hung in the San Bernardino National forest this last week. Near Jenks Lake on the East loop. We had some GOOD times, and wasn't another a soul up there. I slept in my Hennessy Explorer (I sleep better in my Hennessy for some reason) and my 5 year old slept in my 1.7 WBBB. My wife and baby slept in our RV.
It was a lil buggy and a whole lot of dirty but we had fun. No problems. I'd recommend East Flats becuase the road is a little more worn and the trees clearance is a little better. The lower loop's road is a little more rocky and the tree clearance is a little lower. Either loop is a BYO Everything type deal. There is no accessible water -- nearest stream is about a mile away. Even the paying camp grounds were out of water. The trees are big around so pack your long webbing. The bark beetles have devastated the trees, the crews have done a great job at clearing the effected trees but you still have to be on the look out for widow maker limbs.
It was 80's during the day and 70's at night. We slept with pads and sleeping bags. There are no camp fires allowed, if you're caught with one there is a 5K dollar fine and I was told that they just doubled it to 10K -- so be careful.
Law Enforcement rolled up on us at 10pm and checked the fire ring that someone made close to where we were hanging.
East Flats is off the 38 just past Lobos camp-ground on Jenks Lakes road. Having a truck would be advised becuase the road is rough.