Bought mine last year couldn't be happier knowing depth and temp on my dipsys is a game Changer. I sometimes run 2 on my downriggers after buying an extra paddlewheel. I don't run them that much in the fall with heavy boat traffic. 300 bucks a probe seams alot but over the years I always had 2 fishhawk probes on my boat and have had a few stop working that had to be replaced at 450 a pop. When you go cost of a new fishhawk vs smart troll there pretty close a fishhawk is a one trick pony