I love the idea of a 4th reef. I have a Strong Track for my main, which I love, particularly when reefing off the wind when it blows a bit. But one can't bend on a trysail using the track, as the slides load from the bottom of the track, and it would require removing the main to do so. (Fo get about it!). And because of the way that my spreaders attach to the mast, a separate track for a trysail can't be installed. But presto! I'll add a 4th reef before my next off shore adventure, which regrettably probably won't be very soon.