GPS spoofing is possible by having a rooted phone, downloading the pro version of GPS faker and using lucky patcher or other such app to make gps spoofer a system app. PRO mode can then be selected from settings of GPS faker. countdown timers can be modified as seen on this video (are float values) (no credit for me for video is somone elses)... as the timer counts down from 30, press the pause in game guardian and enter the slowly decreasing values until the timer can be modified. I have not yet tried this but it works for other online games like pirate power. i will be trying to modify the countdown timer you get for the pokecoins you get foor holding a gym... will keep you posted..
ps. does anyone know how to edit a timer in hours minutes and seconds??