Well 1st off--welcome the DHC
If you want to, you can do an introduction on the honey hole forum as there is an intro thread running there.
As for youe question, yes there are. The state of Mn has pits at LQParle.
Also there are guides in the Fergus Falls area and also in the Rochester area-both of these areas are for goose hunting. Check Outdoor News and similar MN based weekly publications as they advertise in them.