Wirelessly posted (htc Pocket PC: Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 8.12; MSIEMobile6.0) Sprint T7380)
You could search for one of the force 1x hacks that won't allow your phone to search for evdo(3g) that you could turn on when you are in a spotty coverage area. Theoretically that should keep it from turning on and off unless you lose 1x service too so no service to 1x would turn it on.