well i kno a few people that do but i think that u have to charge it a lil like wait a few times the press it to stop the bar. so really u only have to press b twice during the game press it once when it says "PUSH" and then press it again while the bar is going it will stop the bar and the higher the bar the higher the power
but u can press it semi fast to get it all the way up but i find u lose very quickly even though i do get it all the way up so i guess u do have to let it charge a little.....good luch
hope i helped