Levitation.

[ Matt's eyebrows climb, his face paling slightly. He wants to be good-giving-game here, especially because he has no better suggestions himself, but the prospect of floating in the air above a multi-story drop with a spell that precludes random movement ... is a nail-biter for him. ]

Ah. Before I say yes officially to you doing that, is there anything in addition to not wriggling that I can do to help this spell succeed?