I don't know if this helps but for nearly 20 years, I used a GI poncho for a shelter tarp with a 3' x 7' piece of GI poncho for a ground cloth. For 15 of those years, this was the shelter I used in the North Cascades on hiking trips; I used an old, heavy, cotton REI (Co-op then) 2-man tent for hard alpine conditions. I stayed dry with the GI poncho unless the site chosen was poorly drained. I used a head net for the bugs with moderate success. After a while you get used to being bitten.
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May I walk in beauty.