December 24, 2020. "On the Mark" podcast host, and noted golf instructor, Mark Immelman shares a daily tip to help you improve your golf and lower your golf scores. The tips are simple, easy to understand, and most importantly easy to apply. Advent Tip #21 shares a tip and a drill to help you understand, feel and execute the correct trail-arm folding so that you can consistently make wide, coiled and powerful backswings.