No, no, no. You've all precisely missed the point!
Doesn't matter what you do in an aircraft as long as you have the speed to do it. This applies from hang-gliders to airliners.
Failure to obey this rule of the air kills too many people every year.
You probably want at least 500' for the turn and to put aside a popular misconception, you're not aiming for the runway you just departed.
My advice is to find someone who knows what its about and try it at a sensible height.