i found this "survival kite" on the web http://www.skystreme.com/A5569B/Clients/Skystreme.nsf/Rescue , they say that this is kite a great locator for SAR units and is visible on radar and bla bla bla, but is it ? i mean a kite with only 160 feet of line doesnt come high enough to be visible for radar, so is this another commercial attemt to sell junk or does it actually works ?