I used to live 10 min south of Rosser Park 10 yrs ago and I used to Ice fish there all the time, they don't let you fish after dark but you could ice fish.I didn't think there were walleye in there,very large Bass,tons of crappie,northern,cats,nice gills,but no Walleye to my knowledge.Did you ever catch walleye in there?Maybe they stocked it since I lived there?I know you used to have to watch your boat there,got my tires sliced, and seen a few other people that it happened to as well.