I certainly wouldn't want soft scores to be part of the final tournament standings, and would prefer there not to be a sportsmanship award at all. I think it's something that everyone should be aiming for regardless, and you shouldn't need to reward someone in particular. If it's an issue, I'd rather have a thumbs up/thumbs down system, where if you give someone a thumbs down you need to explain why so the TO can be aware of a potential problem.