Have anyone heard of the technique of initate turns with rudder , and followed by ailerons to make a coordinated turn
Definitely! I most commonly fly this way. It is my intent, of course, that there be nearly zero delay between rudder application, and aileron, so as to maintain a well co-ordinated turn. If you're sloshing the ball left and right, stop it, no excuses!
This habit came from flying STOL kitted Cessna's and in particular taildraggers, The addition of the STOL kit to a Cessna wing includes aileron gap seals, which make the ailerons more effective, so just cranking the control wheel around without regard for the rudder pedals will create an uncoordinated turn. By leading with a bit of rudder, I find the plane seems more happy.