A unique strategy during F3 at FLR that I thought worked well was executed by teams 1507 and 378. 1507's robot usually shot from right behind the low goal (like many robots this year). When 1507 was under heavy defense, team 378 (who's robot is about the same length as the low goal) would go up against the wall and 1507 would use them to line up instead.
Here's a video of it in action.