The struts are 5feet 3inches 5.3 in length and they are 1/2 in diameter.
I ended up returning my 3/8 nuts, bolts and washer and replaced them with 1/4 inch.
and I'm glad I did. They work better for this project.
My plan remains. To cover the sides by wrapping wire fencing and using a tarp or swimming pool cover as cover. I definitely have to figure out how to make it winter friendly. Just a reminder, I am building these 1V geodesic dome as dog kennels.
Here's sample of a 1V geodesic by www.geodesicbuildings.com