This! Anything electrical can stop working at any time so it's always nice to have a back up cuz with an actuator only system, if the actuator quits you are done! I always keep extra switches and relays on the boat but kinda impractical to carry an extra actuator around. With my setup, my actuator is mounted on machined pins held on with simple hitch type pins, it it quits working I just pull 2 pins and drop the actuator off and I'm back to manually running the stick again but still fishing.If you have a bigger fan your arm will get tired. Mark's setup has both if his actuator breaks he can unhook it and use the steering cable manually. It's nice to have as a back up and helps let you know where the fan is pointed.