Yes, the jiblets are made with angled shelf foot, to Slieve's design.

The main panels are a bit harder to explain. I had some difficulties fully understanding what was going on with the various alternative methods, so devised my own, which is probably an exact reconstruction of a well-known technique! I decided that the model for what I wanted to do was effectively an airfoil section above & below the panel (this is probably Arne's barrel cut method so far). But two questions - one, how to know how much gather at each point along the batten, and the other, how to loft it when I didn't have enough space to lay out a single panel.

So I took a leaf out of the broadseam method, and went for a construction that could be made broadseamed, but without the actual seams. I've seen that idea somewhere on the JRA forums. I looked at the airfoil section, and found four points where I could put in a tuck - at 2.5%, 7.5%, 20% and 40% along. Using the NACA 0015 offsets, I could plot out where those points would be, allowing for 10% batten rise. So now instead of a nice curved airfoil, it was approximated by five straight-line sections. I needed to put in a tuck at each corner. Pythagoras told me how much longer those sections were compared to the batten, so that's how much material to take in at the tucks overall. Eyeballing it, I reckoned that the change in tangent of the airfoil was approximately the same at the 7.5%, 20% and 40% points, so the amount to take in would be the same at those points, and double at the 2.5% point where the curve is greater.

So my horribly complex spreadsheet eventually gave me cartesian coordinates along the sailcloth for all those corners, and told me how much tuck to put in at each corner. Although the main panels are 244cm long (plus seam allowance) I was able to mark and cut out on a lofting board of 155cm x 61cm balanced on a plastic garden table.

If you can make sense of that description, without any diagrams, I'll be somewhat impressed!