There is a team based in our area that does this kind of stuff. It is a 14A travel team and a good one. In addition to yelling at pitchers, they rattle the dugout fences and use softballs to bang on the dugout walls. This year they brought real drumsticks to tournaments to better bang on buckets. The parents of these players seem to eat this stuff up. To me, these antics are bush league and disrespectful of the game.