Um...sorry to butt in but here's my two penny's worth.
Don't.
If you went in Clear Area, you can get out Clear Area by back tracking.
If you went in Helipad, you can get out Helipad.
If you're going to approach to land downwind, ask why.
If you have to take off downwind, ask why.
Even during Police Ops I avoid downwind landings unless it's life or death & even then there has to be no viable alternative.
At worst I'll take a cross wind, but I haven't come across a good reason to take off downwind in my very humble 12 years flying.
It can be done & reasonably safely....but why? The machine prefers being into wind, chances of successful reject, after donk, are much better into wind (not least because the tail hangs lower downwind).
Into wind is the safest option (I don't think anyone can argue with that? Except Chinook drivers?)
Cheers!