Just so as there is no doubt - the Rotax is very different to other aircraft engines, so those going on about not gurgling as it's potentially harmful to yourself or the engine are unfortunately incorrect.
Agree. And the other misconception aired on this thread is about the magnetos being or not being properly grounded. Apart from the fact that the Rotax doesn't use traditional magnetos like a Lycosaurus, the Rotax also doesn't have a mixture control. So you don't shut down the engine by pulling the mixture to ICO, but you shut it down by grounding the "magnetos" (word loosely used here). This means that every shutdown of the engine is an implicit check of the grounding of the "magnetos". If they don't ground, the engine won't stop and you have to use drastic measures like shutting the fuel valve.
So in that respect rotating the prop of a Rotax is about as safe as rotating the prop of a Lycosaurus - it should not be a problem since there should not be a spark (Rotax) or fuel (Lycosaurus) if the engine was properly shutdown. But you treat the prop with respect anyway.