I am new to poncho tarping, and tarping in general. I got a GoLite poncho tarp during a sale last year, and decided to set it up in the back yard today.
Here's a picture of my pitch:

I thought it looked okay, but when it started to rain, the hood area started to sag in, and water started to accumulate there. I got sort of an inverted ridge line:

Then, it started to hail (unexpectedly) and the issue got even worse:

Additional information:
Tie outs are Oware 2mm Dacron cord. Poles are 32" Easton Aluminum. Stakes are Lawson's Ti shepherd's hooks. Poncho has not yet been seam sealed.
What am I doing wrong? How can I get a tighter ridge line and keep the hood area from becoming a lake?
I have seen people tie the hood off to a branch or pole, but I would rather avoid this option if possible.





