The longer it lies over the heavier it gets. Easiest way to get one up is to do it straight away while adrenalin and embarrassment are on your side. After that you need a fair bit of muscle. There is a clip on YouTube showing a technique where you push you back against the seat, grab hold and use your legs. If you're lucky it fell right side so you can put the stand down ready to catch it. If not,............
Best thing of all to do is not to drop it!