Hi there Tim thank you for your kind words and no I don't put any finish at all on them. I like the way the wood gradually darkens naturally, I did try clear varnish once years ago and I don't like the way it goes yellow as it ages and the dust these models gather doesn't show up so much on untreated wood. Best wishes Vic.
If my memory serves me correctly the dimensions and how to build the sail are in the written instructions there are no templates for the sail. Use the box art as a guide. Best wishes Vic.