Just got of Yampa July,22,2016. Took a over loaded Beverly hillbilly 16 ft NRS, and a 12,6 raft fully loaded. Launched at 600cfs. 1st and 2nd days each boat got stuck about 4 times. Each time just got out and pushed it off with out helping each other. Lots of moves to avoid all the sticky rocks. The 12,6 had an easier time, but in the end both had that same amount of times being stuck on rocks. Big joe, No problem. There is only a right run for rafts. River improved a lot after Harding Hole. Warms springs the 16' raft ran left, middle left. We pinballed most of the run. It's a IV at this level, but a slow moving one. The 12,6 we pushed over some rocks right then went middle, then left. It was a bit sketchy for both runs, but there is a path. Now the trip was amazing. Clear warm water with incredible sand bars and the Gem being Box Elder 3. The best craft now would be 2 person ducky or white water canoe, or a soar. Go back pack style and have an amazing trip. Didn't see a single person on the Yampa. 500cfs is the lowest for a raft!