For those still interested in getting a Tracker system here's a funny (not so) story...
My Ducati was stolen again two nights ago. I actually watched the white-van guy drive off with it. Called the police and Tracker in turn. 2hours later I get a call with the good news that they arrested the guy in E15 London. Let's see if the police charge the perpetrator this time eh?!!!!
Needless to say I swear by Tracker(tm) and will have the unit installed on all my bikes!