General Goeff - That's not the technique that we at the MSF teach for making U-turns. I'd be very reluctant to try the way you are describing.
I see you are in Allentown. I teach/coach The MSF Beginners Riders Course and Experienced Riders course at the State Police barracks by airport road north in bethlehem. You can sign up for free MSF BRC and ERC courses via http://www.pamsp.com/
Anyone else in PA can get their MSF courses for free (well, the motorcycle endorsement goes into a pool to pay for these).
Regards and ride safe.