I just got off the Yampa, and I can tell you with 100% accuracy that it is low. Above Harding Hole, my partner and I spent a lot of time bumping into rocks and walking the boats. Below Harding there were a lot fewer rocks, but still quite a bit of walking.
Also, unless we were going down a significant gradient drop then there was zero current. If there was any wind, we made backward progress unless constantly paddling.
I for one would not put back onto the Yampa this year unless someone was paying me to do it and I was borrowing a boat. The flows are now sub 200 and appear to be dropping quickly, so if you're going to go, I would go now.