December 8, 2015
Quantum Expert Answer
Yes, telltales on the leech of a jib aid in trim; however, telltales on the leech of a genoa do not offer good information. The air exiting the leech of a genoa has too much turbulence rendering a bad telltale read. The second school of thought is sound. If the telltale on the leech of a jib starts to stall or stalls, you should ease the sheet. In breezy and/or wave conditions you want the leech telltale on a jib streaming. As for the additional telltales on the luff of a genoa and leech of a mainsail, you will still use these as tools to adjust your sail trim.