Well I took the advice of some folk on this forum and invested in their Drone Tracker Package...All kitted up now. I have to say I am pretty impressed by the accuracy and speed. The rewire weighs 40g and a Lume Cube strobe 10g. I purchased a roll of 3M Double Lock which is amazing stuff so I can just snap on or off either. The rewire uses GPSLive and wherever your drone hovers providing you have the 3W3 app installed you just hit the location button and it immediately gives you the option of Google Maps or What3Words coords, then you just hit the share button and send the location to the relevant searchers.