The bluetooth i pilot heading sensor gives you the ability to jog 5 feet at a timein any direction with the click of a button on the rempte when in spotlock. I've got a sensor myeslf that i'll be installing just to be able to. A nice feature to have in my opinion. Say you're in spotlock sitting 40 feet back casting to a brushpile & you want to go in to 20 feet then you can click the remote 4 times & it will take you there & respotlock at 20 feet. Also be a good way to stop shy of a current waypoint & then ease up a safe distance to avoid the trolling motor blowing them out. I'll be installing mine this week if i don't get to it today. :ThumbsUp