Kettle - B) Banning State Park to Sandstone (2.8 or 4.3 miles) (MN)
Reasonable beginner flow.
This 'entrance drop' lies immediately downstream of the river access in Banning State Park. Deepest flow is to river-left, through a great sequence of waves and holes. Named features down this stretch include Shoulder Hole, Teachers, Teacher's Pet, Mother's Delight, and Dragon's Tooth.
The following video (courtesy MnktoDave and YouTube) shows some great open-boat surfing at high water.
It also shows the undercut at Dragon's Tooth, as a kayaker deftly paddles by.