Likely, brooms don't even do that regularly for the unskilled, according to book 1, and we know he can fly, because he refereed that match in first year.

Yeah, Gryffindor always wins, but this time they only were just saved from losing in a most humiliating way by Harry's seeker abilities. I almost made it a repeat of the world cup match from book 4 (Ireland wins, but Krum gets the Snitch) but I wanted to play around with winning, but not having it feel like winning.