Do not underestimate the power of OOC plotting. Even people that OOCLY cringe at the Genius tropes will be more willing to help and give two cents if you're upfront about the fact you want help with showing that you aren't some stuck up ass.

Basically have some decent OOC communication skills.

Also don't be afraid to Mavis Vermilion (from Fairy Tail) it up. Characters that are good strategists are going to forget details at points because they are human. What makes and breaks these characters is how well they can recover on the fly/let people on the field fix the strategy.