I bought some shadecloth before going FT and finally deployed it this weekend.
It’s commonly available in 90% and 80% shade, with 90% being more popular. 80% might be happier in very windy situations, although even 90% is much easier to deal with in wind than a normal tarp.
I wanted shadecloth because I work on the galley end at the side sliding door. If sun comes through at all it burns people and overheats equipment quickly. I smoked an inverter that way, and nothing was plugged into it. I had it laying in the sun and turned it on…. pop! Unfortunately the fuse was soldered to the board instead of being easily replaceable. Note to self….
The brutal sun, I suspect, is due to the reduced attenuation of sunlight through air at these 4000’+ altitudes. It’s really noticeable.
If I’m parking for a couple of areas I’ll arrange it so the slider is on the shaded side. But if I am emplaced somewhere (or want to be parked in a given direction for some reason) the shadecloth really reduces the sun. After putting up the shadecloth my black laptop does not get warm at all.
The cloth stretched a good bit in the first few hours, requiring guy cord adjustment every so often.