As a TH 8 GoWiPe is one of the fundamentally important attack strategies to master. With earthquake x4 it can ravage TH 8s and 9s alike.
However, it is not without problems.
When I GoWiPe a TH 7:
When I GoWiPe a TH 8:
When I GoWiPe a TH 9:
When I attempt to GoWiPe a TH 10:
So as you see, with each successive townhall, my attacks become less successful. However at the Town hall 7 to Town hall 9 levels, I am free to UNLEASH GOWIPEMAGEDDON!!!