I apologize to Lori, my post was heated and harsh. I always carry a msr e-wing poncho tarp to compliment the Bivy if needed. And for backpacking in general I would take a tent over a Bivy any day. When you day hike 2-3 times a week 6-12 miles all off trail like I do you will carry minimal overnight gear, which for me means a Bivy AND poncho tarp. I spent 4 rainy nights in this set up last year on top of Chatovic. I know it works as intended.

Once more I'm sorry if I offended anyone involved. I was just coming from a slightly different angle.