Replying to Help on 270'ing a backyard hip jump?

well, we set up a pretty good hip jump in my friends backyard, to work on. We have a drop in, then a roller, and then you hit it. I rotate left, so first I tried going up and coming down switch which was easy, so Ive been trying to hit it, 270 and land going down the side backwards...if that makes since. Basically, Im only getting a bit over 180 degrees though. I carve at it and hit it angled, but still cant get the 270, so i dont come down smooth, and dont land fully switched. Any tips?