Is this a needed spacer for the floor boards?
I pulled off the floors today and found some of these L-shaped alluminum pieces. They sat almost exactly where you see that one, between the plywood pieces and U-Channel. I should have taken a picture, but the bad drawing will have to do.
It was not fastened in any way to the outrigger, wood, or U-Channels.
What purpose do you think these served?