While summer is undoubtedly the prime time for the lake's use, autumn colors paint the lake gold and orange, and the winter view is frosty white. To get to Yellowstone, take County F from Darlington and Blanchardville. From Argyle, take County G. Then turn on to Lake Road. Adjacent to the park, in the Yellowstone Wildlife Area are 33 miles of horse trails, put in three years ago. Hunting is the major use of the property there.
Horses are kind of guests.
I think the two uses are compatible. The trails are where the hunters aren't, for the most part. Use of the trails, maintained by the Department of Natural Resources, is free, although there is a donation box. Trails are open days during daylight hours May 1 to November 1. Rules are different for the wildlife area than for the park.