It sounds like you have been doing much as I have been doing, but it sounds like you have been rolling into a much smaller coil than I do. Below is a picture of my 88’ doublet with 6-7m of 300 ohm window line. The coil is conveniently sized to fit within a one gallon ziplock bag. The inner coil is 6" but the outer coil is 9". This doublet has probably seen hundreds of activations and the window line definitely has a bit of a set, but I can’t remember the last time it caused any issue. The first thing I do when setting up the antenna is toss out the coil of window line and it normally unfurls without any issues! I don’t know if the direction of coiling makes any difference but when packing up I wind up the legs on the winders and then holding the winders between my knees, I start coiling up the feed line from the center isolator (instead of rolling up from rig end of the feed line).
73, pat - KI4SVM
