The winds will always shift as the typical fronts come thru. so simply look at the weather pattern and time your sail out on trades and then try to run a front back. The fronts will pull the winds to the S then SW then W then NW then N then NE until they are back to East trades. If you want to sail it back then you need to time a front.
We use the
www.PredictWind.com app and that will show you the wind pattern for 7-1o days. We find it is very good for this exact situation.
Hayden
