used to do backward autos with Robin Simpson at Hooks . Every time i tried to do a 270 -360 auto into a small opening in the trees i would lose it or come on heading too low etc the backward auto means you keep the site in view or at least know where it is . Of course you need to be pushing nose down around 300 ft at v latest . Then no different to hovver auto from say 200 -250 ft ( this was in 206 so may be more in different machine ) . It does however need practice !!