The trail maps online do not do any justice to the available trails in that area. When I ride that area, I park at a friends cabin just outside of Minong. I wish I could tell you exactly which trails to hit, I cannot remember the names.
The trail are good, but if you are just looking for a day trip area, I would suggest Nemadji state forest in MN (NE of Hinkley). Lots of different trails and some really fun Class I trails if you are riding an ATV. Another fun place is Clark and Jackson county WI (Black River Falls area). We are actually headed there next weekend and hope to put on 300 miles or so in 2 days!
I’m sure Suzuki will chime in, I know he rides that area quite a bit.