I'm following this thread because I'm no good at either of these, and I want to know the answer!
Dorsal's answer about the dropping wing SOUNDS right to me, but I think it's the opposite of the (hot-shot) answer that this question just got on the gwtw forum, so I'm still scratching my head. (I should be out flying instead!)
But D's answer about the side-slide is reversed from my recollection of Prism's instructions on the side-slide. I'm pretty sure Mark recommends holding the LEADING hand steady, and tending by adjusting the TRAILING hand.
Again, definitely DON'T do as I DO, and think carefully before even doing what I SAY!