Practice the turn back manouver with an instructor and when the airfield is not busy. Work out a minimum height for your aircraft in average conditions (but make a note of strong winds etc and modify brief accordingly).
Brief this height as an option prior to departure but only turn back if above this briefed height and no options exist ahead or to the sides.
Generally you will require a fairly steep bank angle e.g. 45degrees
remember to make good use of any cross runways as required.
Hope that you never need to do it !