I adjust with trail quite a bit. I run almost the same wheel weights in leaf cars and 3 link cars, but one difference is that I usually don't run much stagger in leaf cars 1/2" and run more in coil cars 1" 1 1/2". I often use trail to get me through the center of the corner if we're close, but just need to be a little tighter or looser. It tightens or loosens all the way through, but turn entry is easily enough compensated for that by loading the RR tire more or less again. I rarely change stagger from the start of the night to the end. I run a little less at bigger tracks, but still usually don't adjust throughout the night with it. It may not be right, but it's how I roll. LOL