I'm glad that you're interested in using GoWiPe attacks, but there comes a point where a TH8's defenses tend to be too much for a Th8 GoWiPe to get the job done. Or at least, that's what I've found. As a Maxed TH8, I'm faced against other Maxed TH8s, and lower TH9s every war, so I NEED to have the most powerful possible attacking strategy behind me.
I've found that although GoWiPe can be powerful enough, that there is another strategy that covers its flaws.
Time- GoWiPe when it's most successful can still fail due to time limits. Wizards are often wiped out fairly quickly, and there are ofter Pekkas running through the base, but they simply aren't fast enough to cover everything before the time runs out.
Teslas- Teslas are a Pekka's worst nightmare, and if the Pekkas walk right past them, they'll easily succumb to them, ending your run early! Maxed TH8 (LV6) Teslas are killer, and often do the trick!
Pekka AI's- The hardest part of a GoWiPe raid, even on seemingly easy bases, are the unpredictable routes of a Pekka! Even some of the best GoWiPers will find their Pekkas running around the outside of a base every once in a while!
The Solution!
I say, "Drop the Pekka, and pick up the Valkyrie!"
GoWiVa / GoViz is the most powerful attacking method that a Th8 can utilize! Many don't realize the power of a Valkyrie as it has become dangerously underrated and overshadowed by other troops such as the Pekka; But the truth is that Valkyries are possibly the most powerful troop out there!
Not only that, but Valkyries' AIs are incredibly predictable, as they target clumped together buildings first! Those targets are most commonly the Core of a Base!
THIS is my guide on how to Properly utilize the Valkyries as a TH8, and hopefully you can get rid of/bypass the unpredictability of Pekkas and move right onto the Valkyries!
If you don't believe me as to how powerful GoWiVa / GoViz is, then check out this video my clan mate recorded of how I 3 Starred a Nearly Maxed TH9 with this strategy!
Video
And if you need any help with the strategy, feel free to PM me, and I'll be happy to help you out!

