Transom-mounted trolling motors should be positioned so that the center of the motor section is at least 9 inches (22. 5 cm) under water while the motor is running to keep the propeller from breaking the water’s surface. This produces noise that can spook fish.
Your anti-cavitation plate must run at a depth of at least 13 inches (32. 5 cm) below the waterline, so that the trolling motor will run at least 6 inches (15 cm) below the waterline while in operation.
Engine-mounted trolling motors are designed only for V-hull or tri-hull boats that go “on plane. " They are not designed for use with pontoon boats or with sailboats.
The base needs to rest evenly so that the motor can be raised onto the deck and locked down for transport without binding.
Bow-mounted trolling motors should run at least 5 inches (12. 5 cm) below the water level to allow for rough water. If you fish from a standing position while running the motor, a depth of 12 inches (30 cm) is recommended.
