Good thread! I had the good fortune to run Steven's Gulch down with a commercial crew of 7 fatties two days ago at 1.6 on the guage. I got way stuck at the entrance to Ginsu Corner, (above Tunnel) and let some air out. Came right off! Then, because I'm a shitty raft guide, I got stuck again in Tunnel, and let some more air out. Came right off again! So, take three, stuck again (these were very fat people) at the Ding Dong set up and just took one more little toot out of the floor. Suddenly I was getting stuck everywhere and had to repump the floor.
What I learned is that slightly floppy is good, too floppy is way more sticky. It's like a delicate little dance, man.