My father in-law is building (slowly) a Tiki 31 and wanting us to help make the sails. In looking at the plans I don’t see anything about the straps or zippers I have heard mentioned when talking to others. The zipper I’m sure is straight forward so I’d like to focus on the straps. How many are there and at what spacing and width is each? How are they connected and do they “unfasten” at one side to facilitate installing and uninstalling the sail with the mast up? If so what is this fastener. I have looked over and over the plans (which are otherwise so easily followed I think the kids could build the boat with minor supervision) and just don’t see any reference to it. Thanks for the help to anyone with the knowledge.