Can't answer your question specifically but look closely at that glider symbol
on your aero chart: If it has a G it indicates glider "activity". H indicates
hang gliders and U indicates ultralight "activity".
For a list of US glider clubs and commercial sites, go to
www.SSA.ORG
Click on "Where to Fly" and then the state.
Note that just across the St. Croix river from Osceola, WI is Minnesota. You
can soar north of White Bear Lake with the Red Wing Soaring Club. There is
also a club at Stanton, MN and a commercial operation at Faribault. MN.
Good Luck! Let me know if I can assist further.
Burt Compton
Marfa, Texas
www.flygliders.com