The right winglet went on today. I had it very close and Michael came in to lend a hand. Under his instruction we rechecked the sweep on the winglet with a far better measurement method than I'd used. The result was about the same but confirmed properly that all was good.
We also added a few rigging blocks to lessen the delicate positioning I'd set up. While both work the later is more reliable. With a set up check good on all four positions, I added 5mt epoxy with a little flox and secured the winglet. We then added the struts you see in pic 3 and I'll add a few more for security for the eventual drive home and the structural layups.
Next up, the left winglet and set to match the right.