Do what king w.? I just came from Bass Pro Shop with The Humminbird rep. This unit will work up to 7 mph and will flash up on the screen that it was deployed incase you forget it is deployed. This is excellent technology and will help anyone that is willing to spend the money on this technology. Yes you will have to be up to date on your software and have a unit that has a ethernet port but it is just like a rod and reel there is different applications for different types of fishing. Electronics are your friend and can help anyone be a better fisherman. If anyone needs help installing updates or wants to learn more about there unit let me know. Hopefully in the next month or two I will be doing a seminar at Bps. If you have any suggestions on topics that you really are struggling to understand let me know. Thanks Sterling