I think the only good way to know the flow is the stick at the put-in we had 18 and 1/2 I think over 20 is ideal.
So here is what happened at balls, Kevin and me ran first as Joe and Eric set safety, then they ran as we did the same. Joe was first and came over the crux drop (3rd) a bit in the middle and when he landed it flipped him, he missed one roll as he went down the far right slot at the bottom drop. At this point my view was obscured by the rock and I was getting my rope ready just in case. Kevin said that joe got push sideways into the tight slot and looked like he got hung up a bit. All I saw was his boat flush free but no motion until 1/3 through the pool when joe came out of his boat. At this point I threw my rope to joe (about a 60 ft distance) as I was throwing it joe was swimming the other direction away from me and towards a midstream rock, the rope landed just at joe's back. I was yelling as loud as I could for joe to grab it but he kept his mark spitz act toward the rock and was able to make it and climb up onto it. It was a good thing that he didn't grab the rope because then he would have been stuck on the right side that is cliffed out.
At this point Eric came down and got out on the rock that joe was on and we set up a plan for us to rock hop joe down the left rocks and to the left bank where we could get him to hike/swim out. The first move was the sketchyist move, I had to ferry down to the next rock to grab/climb out on it. This went better than I thought it would and was able to get out on the rock, we then roped my boat back up to joe and he made the same move I did and I was able to help him out. From here I was able to paddle down a couple more times to rocks where joe would hold a rope/swim to the rock. We finally made it to shore and he started scrambling down the back and swimming through the pools until we got the hike-out. It went about as smoothly as possible.