I have not done the upper floats this year, but recently floated Shelburn to Greens bridge in pontoon boats and it was very tough. Lot's of log jams and side channels. Lot's of very sharp turns too. In a drift boat, there's probably a spot or 2 you'll need to get out and walk, and another spot where there's a log just under the water. The others were ahead of me and walked their toons around. By the time I knew what was about to happen it was too late. Barely made it. Just be very careful on the curves and have someone with you to spot "boat sinkers" for ya. We did catch a few fish though, and it was a good float overall