The problem with it being that low isn't really the little bit of dragging you'll do, but it's the headwind. If there's a substantial headwind (which is likely) and you're not riding down on a release, it can be a bit of a bummer.
Amen. I've floated it as low as 23cfs. Plenty of water in the long pools, but those headwinds...yikes! Lot's of hard work, especially if it's in the 90's.
And that last 2 miles before Rochelles, you're going against the headwinds and pushing off the bottom with your paddle to go forward.
I still enjoyed it though, A rough day on the Brazos is better than an easy day at work or home doing honey do's.
If the winds out of the north like it has been lately, that's a lot better.