This plus a Tennier Bivy.
The poncho-tarp provides both shade and a stronger surface to take the strain off the guylines so that the net won't be overstressed. Plus it has multiple uses, including:
a. Poncho,
b. Changing and potty cloak,
c. Tarp for wet ground,
d. (Possibly) a Rain skirt for when its really coming down (an umbrella will cover my top half, plus be used for shade while hiking) I haven't tried this yet, and not entirely sure how I'll keep it in place. Something to mod, maybe. I'd use waterproof socks with this, cause no doubt the rain will just be directed right into my shoes. (I use Rocky gortex socks, since they're a a shell for your regular socks, and so don't require washing. If the combo is to warm for the weather, I'll just wear my knee high pantyhose to wick sweet.
I'll pitch the tarp low and use it to cover my head and pack when it rains, with the rest of my body in a military bivy sack.