I bought a new vision v3 after I lost my vision v2 last week. What gps trackers/locators do you have fitted to your unit. What is the best available gps out there. I would prefer a gps with it's own battery so that it will broadcast for longer. Also I'm going to attach florescent strips to make it easier to spot at night under torch light. Im also going to look at water proofing after a while. Very expensive lessons learned :-( .