I didn't care for the look of the aluminum sheet wrapped on the bottom of the struts, so I made a small triangle block of wood for in between the struts, sanded it smooth and fabric covered the area. You are putting fabric over the farings anyway, so why not the bottom as well. This allows you to make it look much more finished, IMO.
SLSA.jpg
This is a Kitfox SLSA taken at Airventure. It was the inspiration for mine. I will try and snap a photo or two next time I'm at the airport.