You're accomplishing two things at the same time. Moving to your left/reloading the gun. Here's what I do(assuming a decent distance to travel to the next position): drop my hips to bend my knees in preparation to explode out of the position while simultaneously ejecting the mag out of the gun as I'm bring the reload to the gun. As I pause the mag at the gun my lead foot should be off the ground causing my weight to shift in my direction of travel. Take off as I'm inserting the magazine and do whatever I need to do in regards to entering the next position. You're accomplishing the perilous part of the RL while remaining relatively still and also getting a better/more explosive exit out of the position. Once you get the mag to the pause point on your gun it's about impossible to miss the RL. You're also "hiding" the RL time by doing it while you exit.
For me, dropping my hips or drop stepping is my trigger to execute a planned RL. Since I mainly shoot SSTK, this happens almost everytime I leave a position.
GB