Dry micro in the divots, slurry overall. 2 x UND angled as per the plans to cover each upper winglet surface in one width with the maximum angle between plies. 1 x BID over each attachment area, 2 x UND over the lower winglets at 45 degrees. Peel ply overlaps.
Having the lower winglet foam jigged root-to-root worked really well. The upper Winglets aft-to-aft was a PITA, too far to reach to position the cloth easily, would have been much preferable to get at each upper Winglet from fore and aft.
