Police and the Ministry of Natural Resources issued fines and warnings while conducting patrols on area waterways and snowmobile trails Friday.
Officers on sleds put in 36 hours of patrol, checking more than 75 snowmobilers and ice fishers for equipment, required licences, registration, and trail passes.
Four people were fined and five were given warnings.
“With a balance between rider education and enforcement in mind, officers deal with issues found on the trails on a daily basis under some extreme weather conditions and welcome your co-operation on the many trails here in north Simcoe,” Southern Georgian Bay OPP said in a news release.