Does anyone have a sense of how fast the river moves on "average" at lower flows? 3 mph+/-?? We launch the 22nd of August, planning 5 nights / 6 days and tentatively longer days in the first half (16-20 miles), to allow for some shorter days in the Salmon Lake section. Bringing the kids and wondering if we have some all day row-fests ahead of us? Only other time I ran The Main was at 8.5-feet in 3 short days and imagine it will be a "little" slower this time.