Thanks for the info... I'm thinking no boom in the end -
tacking - wonder if a single sheet using the existing track and a slider would make it self tacking. (Image below of the track a few years ago. )
Sail shape - that is an issue and it's not a Kern sail - so to convert the sail I'd need to add sun guard and have " ?? " added to the luff to slide into the track and possibly recut to make the sail flat.
We'll see that the owner says.
Jay