Anything small and slow has to be the worst thing to be when it comes to experiencing turbulence.
I remember a Brymon Dash7 falling what seemed like a few hundred feet overhead the CI's enroute to EXT.
Luckily we'd been advised and all pax crew were strapped down at the time or there would have been a few bruises I'm sure.
FS. .(Better up front where you can see where you're going than in the back looking at whats going by)