I wonder which strains are better for what he's talking about? Myself I wouldn't enter any competitions high. I'd prefer to be sober for that. Maybe weed with some practices.
I do Shaolin. My biggest issue is memory LOL. Trying to memorize the katas can be a pain. Especially if I learn them sober and then practice them high or the other way around. It undoubtedly makes me take a lot longer to commit all the moves to memory.