Kinda made my own SFGs last night... Got the 74" edge prototype I owned previously back, and figured id add what it had been missing, SFGs...
First, I acquired the current 74" SFGs and spacers, then went about adding blind nuts to the spacers, and making the spacers a little thicker to accommodate the blind nut.
Then I prepared and mounted them to the wingtips with epoxy.
Next, I added some covering, white on the bottom, and overlapping red on the top.
Finally, I installed the SFGs:
Not the perfect and pretty install, but sturdy, functional, and the wrinkles won't be visible when I'm flying