elparquito is it as technical rowing as the Calawah?
No, but kinda depends.
You doing it in a hard boat or a raft?
Raft's seem to be the "great equalizer" on that river. You can bounce off some rocks and wood and not get in too much trouble. You can also just as easily get in to trouble with a raft up there if one omits the basic common sense when boating a river.
It's very doable in a hard boat, especially if you've been down the river this year and know what has changed and hasn't changed. As with most rivers, the lower it get's the more challenging and skinny some places will get.
As many have pointed out, the Sauk is a very dynamic river, where the Calawah generally is not. The main channels on the Sauk change every year, which means new lumber, rocks, sweeps, new hazards, etc.
I'm guessing getting information about the river from this board may be slim to none, minus what other's have mentioned.
Personally, I'd tackle this river like any other unknown river I was going to row. Yes, I'm firmly aware that I do not own a drift boat, but that doesn't mean I don't know how to row one. I'd float it first with someone I knew and trusted and once I saw first-hand what I was up against, I'd decide whether I could row it in a hard boat. Else, If I had a raft, I'd also just go for it, take my time on some unknown areas, ask some fellow boaters if you came across them, get out and scout if I really needed to, etc.
Google Earth isn't going to help you much...unless photos are updated frequently. There's a good chance the river will change course between now and the end of the fishing season.