I Have a Satio 150 in mine and have it mounted sideways. This directs the exhaust out the bottom, and keeps the head out of harms way in the unlikely event of a nose strike, makes attaching the hot shot easier, and looks better, as the Ultimate has a very long tapered nose that has a lot more room side to side, than on the bottom. The Pitts and Christian Eagle I mount inverted.

BTW, of those three, the Ultimate is hands down, the best flying, for everything other than tumbling maneuvers.