After switching from my previous boat that had hanked on headsails to my current boat with a 150% furling headsail, I frequently get it pulled out too far when initially setting up for higher winds. This got me to thinking about marking the furling line with markers at something like 85%, 100%, and 135%. But then I also miss the telltales when the sail is not all the way out. I am thinking about installing telltales at the aforementioned partially furled points. I don't know of anyone else that has done this so this makes me wonder if it would accomplish my goal. Anybody have an opinion that might save me a lot of useless effort?