Brandon Sun By: Tyler Clarke SUBMITTED Myna Margetts is seen enjoying the Souris Bend Wildlife Management Area’s equestrian trails in this undated photo. A group of equestrian riders is channeling their outrage into a letter-writing campaign targeted at the province. Advertisement A group of equestrian riders is channeling their outrage into a letter-writing campaign targeted at the province. At issue is the proposed welcoming of motorized vehicles such as ATVs to the Souris Bend Wildlife Management Area’s southern trails. A phone call from a "power that be" from the province Thursday made it sound like it was a done deal, said Myna Margetts, who has has managed the area’s equestrian trails for the past few decades.