Originally Posted by
uncle8
Don't know about RA but you must practise engine off (idle) approaches if you are to have any confidence in carrying out a real one. You will become rusty or very rusty without some practice.
Stalling doesn't require the same amount of judgement and calculations so, while it is good to practise, doesn't need so much.
In RAA you do engine off as in engine TURNED off... as in propellor not spinning.
Probably not a great idea for a hot Lycoming or Continental when it may need to be restarted quickly. Not an issue for a Rotax though.