While teaching a class today, a student had a rain jacket with a side draw string. Of course, the string managed to get wrapped in the trigger guard area of a Glock 34. Luckily it was observed and stopped. Needless to say, despite the rain, sleet, and snow - anybody with draw strings was told to cut the strings or remove the jacket. I let the jacket slip buy, but after today, it won't happen again!
Just sharing for community consumption. I was well aware of the hazard, but the jacket still slipped through the cracks.