Hmmmm... Snape always struck me as the geek type during school. XD You know the kind I'm talking about, the type that all the Jocks would tease and make fun of and bully mercilessly. The kind that would much rather spend his time in a lab room, running experiments, instead of being out with friends/aquaintences. The kind that is very impatient with those who aren't as knowledgeable in a subject that is to him as easy as breathing.

That being said, can Snape fly a broom? Sure! Was he good at it? I'd say he would passable. Just enough to get where he needs to go but by not good enough to play on any team (nor any inclination to want to do so). I for one have always pictured him as somewhat graceful in movement, because of how he tends to swoop around everywhere. That takes talent! Because of this, I think he could be a decent player, if he so wished to be. I just can't picture him with any inclination to play. At all. It would take away from his precious potions after all.

I'll stop here, while I can.