MotorGuide invented the first bow-mount trolling motor in 1961 and was purchased by Brunswick in 1984. MotorGuide is now a part of Mercury Marine and manufactures world class products in our ISO 9001:2000 Certified Plant ......MotorGuide invented the first bow-mount trolling motor in 1961 and was purchased by Brunswick in 1984. MotorGuide is now a part of Mercury Marine and manufactures world class products in our ISO 9001:2000 Certified Plant in Tulsa, Oklahoma.