b. execute a 180 turn in the direction specified , SO AS TO FLY
OUT-BOUND A TRACK PARALLEL TO THE INBOUND TRACK
And that is all you need to do. You can go stir crazy trying to remember formulas and your pure instrument flying accuracy will be degraded. If you overshoot the inbound leg that's OK - just ensure you are back on track to the aid before reaching overhead. I also knew the bloke in DCA who confirmed multiple drift angle corrections was not on because of the danger of straying outside the protected area - he worked in the office next door to mine 36 years ago.
Aerocat S2A. Just watch the "shallow" bank angle theory. With some gyro systems running the weather radar and also ADI, any prolonged angle of bank less than six degrees can give rise to marked errors in the vertical gyro system. This shows as false ADI wings level and/or pitch attitude and in turn the weather radar stabilisation system will go ape and paint echoes only on one side or the other. Stick to minimim rate one turns and the gyros are happy.