Baseball (which I presume are the playoffs you speak of) isn't the same as football (wait that sounds pretty obvious), but I mean the fans. They do not tailgate the same as football. But actually football usually works great. College football too. I have heard success at high school games to if you can get the school on board to help a charity. At a Navy game a participant and some kids raised a thousand, but they did stop soliciting in the parking lot eventually, so that is something to watch for.
Good luck. Train Well. Raise lots
