Usually, doing a 270 would be a bit too much, or not quite enough, of a rotation to do you much good. The exception is doing one onto a rail, which results in a boardslide, and that’s alright. Here is a full rotation of 270s from Zak Hale, Ethan Deiss, Wojtek Pawlujiak, Niels Schack, Ludwig Lejkner, and more.