Hartman Creek State Park:

Address: N2480 Hartman Creek Rd, Waupaca, WI 54981
Learn 2 Fish With Us hosted our fishing program on Allen Lake middle of June.
We had good fishing catching some monster largemouth bass and bluegills. 
Utilized a bobber set at between one and two feet with a small piece of worm. 
There is some open areas to fish by the dam but other good areas exist but there are a lot of trees.  So be careful when casting!!