Anyone here have experience of using a riding sail when anchored or moored?

Made a thing called a "wedgie" and it worked well. Hang it off the backstay, leading edge down to the deck, two wings out to side cleats.
www.mysailing.com.au/how-to-give-your-boat-a-wedgie/

There is an anchor riding sail called a FinDelta no longer being marketed that I would like to try with my twin backstays.


I have cut the three ends off an old jib and made my own Findelta for an experiment but haven't yet tried it out.

Practical Sailor has a test of various anchor riding sails and the FinDelta scored highest.