What is a sure fire, works every time, never fails way to get the main to unlock?
RIng is the most important. My fav was the Nacra ring with twisted shackle but the NEXT SIZE DOWN twisted shackle as the Nacra factory choice is too big.
If using the welded shacke and ring then knot is important and it should be simple once these things are seen to.
Release all downhaul etc.
Pull halliard tight, twist mast to 90 degrees and let sail down.
If it is not that simple something is wrong...if you have a jib remove first and raise after main.
