HU play really depends on your style and what your stack looks like going into it, not to mention the height of the blinds. Since the blinds are usually quite high, as in this case. I wouldnt have gone in with the Q-3, but definitely with the A-6. If I'm first to act, I'll push hard with any A or K or QJ, QT, JT, PP, or suited connectors PF. alot of it really depends on your read of the opponent as well. Be aggressive if you're low on the stack and getting eaten by blinds.