Megapants
Smash Apprentice
Thanks for the tip!@ MegaPants: Cool name btw. Yeah you don't want to spam the B button. Just SH and use B straight away, then Hit B again as soon as you can (Just before he touches the ground). You'll find that you have to hit B slightly earlier then when He is supposed to quickdraw. Also I wouldn't recomend slowing down the speed because the timing is all different.
I'm so frustrated with this still. I can consistently do a bomb pull to quickdraw, aerials to quickdraw, bomb throw to quickdraw, but not SHDA! It's driving me nuts! D: I'll get it down eventually, though.