Most effective way is if you get an flashdrive/usb adapter and download a script that plays on its own all you have to do is hit x or a after halftime. Lets say you are in div3/4/5 to drop down to div 10 will prob take you a good amount of hours prob 5-7. Benefit is you get all the coins and dont have to pay attention to the game bisides halftime and when it ends. You prob make some 10k-15k easy without playing. But thats some sad **** if you ask me. You do this every week you prob make from 70k to 105k or more with rewards and if you play squad battles or weekend league..youd have to be some crazy mf though.