A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Geoffrey Kolbe
Date: 2019 Feb 20, 23:21 -0800
George G. Bennett, "Longitude from Lunar Altitudes Simplified", Journal of The Institute of Navigation, Vol. 53, No. 2, Summer 2006.
It is a viable idea at lower latitudes, where the ecliptic is pretty much on your Prime Vertical. But at higher latitudes - not so.