[JesseK]

When you do any of the strategies that have been mentioned above, you almost inherently take yourself out of any sort of scoring position. Sure, you could pin the ball against the wall and never move, or pin a backboard against the overpass so the opponent can never hurdle -- but the opponents have other ways to score, and you do not since you're sitting still.

At best, a bot built for a defensive strategy will be able to successfully use the strategies at spur-of-the-moment oppotunities. Still, a steady-scoring opponent will consistently outscore the defensive bot. The scores for the two alliances will be low, but I'm willing to bet that the "defensive" alliance's score will be the lower of the two almost every time.