I use the Marco Polo on my P3S and am happy with it 100%. After mounting mine, a buddy decided to "hide" my Phantom about 2 miles away from my house so I could find it. After riding around the area for a while the locator picked up the tag's signal (the transmitter attached to the drone) and the search began. Long story short, I found it in about 30 minutes very well hidden in some bushes, upside down. My buddy was laughing his *** off the whole time I was wandering around the woods. (I had walked past it twice). I NEVER would have found it without the Marco Polo Tracker, not knowing where it was to begin with. Didn't need a phone, internet, or GPS to find it. Just the locator and the tag on the bird. And the tag transmits once activated for over 8 days, and both the locator and tag are rechargeable. You have a lot of money invested in your Phantom and accessories. Bottom line is this guys,................You can't Fix it, unless you can FIND it. And UAVBits.net makes a great saddlebag holder for the tag.