Hwy 139/189 to Pentoga is a pleasant 12 mile paddling trip. This section is mostly flatwater, but includes a few class I rapids and one class I-II. Maps and a route description can be found here: www.wisconsintrailguide.com/pa...
I and a friend just did the Brule from the lake source to the US2 bridge. Four days, three nights. A fantastic trip, and very primative. First three days hot and sunny, last day pouring rain. I'd love to do it again.
I didn't make it to the Brule this year. I've been checking the USGS gage online and the water level has been low all summer. You must have done some bumping and scraping on the way.