BPF. If you have no info on turning back on any given type then surely its a good idea to 'sensibly investigate', and so an initial practice at 3,000ft would be worth considering. See what happens after the turn: attitude change required, AoB v RoD, reduced stall margin etc. If all goes well then try again at say 15-2000ft. If that works then try 1000ft.
I agree that shock, ground rush, excessive pull etc are all potentially present when it happens for real.
Of course the bigger the circuit flown (why do so many small piston drivers fly such BIG circuits?) the less chance of ever getting any engine failure back to the aerodrome!