Just to be further pedantic
, counter "steering" has nothing to do with the bike actually turning, its only a means of leaning the bike in preparation for a turn.
Pushing the bars the opposite way causes the bike to lean into the turn due to the gyroscopic nature of the front wheel - even leant over a bike will continue to go in a straight line unless the wheel is then turned the correct way to steer - this is done without even realising usually.
This also only happens at speed, why its being brought up for U turns is beyond me.
i was thinking exactly the same - if counter steering plays a part in your U turns then you probably need to be asking Messrs Rossi, Biaggi et al advice not us!
i have seen more than one person drop a bike because they have been retiscent to put a foot down due to a crowd being present- yes it shows a degree of control but i struggle to see the obsession with it - if its slippy at all then I take my lead from my Moto-X days!
fair play to you for both taking the time to practice your low speed manouevres and, having done so, actually questioning your results- the fact that you do so speaks volumes about your attitude to your safety on the road. You may find that your perception of a wide turn isnt quite as wide as you thought, try on a quiet side road
Best piece of advice I could give - look where you want to be not where you are going (I think this may have been mentioned elsewhere). I dont need to tell you how important this is in both high an low speed