I love my TAGG tracker, I use it all the time. The battery should be good for about a month between charges.
I drilled a hole into each of the flexible tabs on each side of it, fit it into the included cover, and zip tie it to the drogue cord. I give it four or five wraps of blue painters tape to protect it from the ejection charges. To move it to the next rocket I just cut the zip ties and use two new zip ties to the next drogue cord. This seems to be much easier than tracking devices that are permanently mounted in an avionics bay and can't be easily moved between rockets. This one takes me 15 seconds to move and has been flawless.
Tagg customer support is also excellent, I always get right to a live, friendly person. The first tracker they sent was bad, after troubleshooting they sent me a new one and its been working perfectly for a year now.
As long as the area you are flying in has Verizon coverage it will work (CDMA not GSM). I realize that rules out most if not all of the desert launch sites, but here in Florida we have great coverage at all the fields I fly at.
