Theo s/v Paloma
I just went through the handover week on my Amel 50. Regarding the running backstays, they told me to use them when running with the staysail. The goal is to avoid mast pumping. So, anytime you see the mast pumping, or bending toward the bow around the middle, use the running backstays.
I have not used the boat yet, so I do not have practical experience.
I hope this info helps.
Amel 50 #18
Still in La Rochelle, getting ready for the Med.