I' ve actually had pretty good luck with that port-a-roof umbrella. This thing has been a lifesaver in rain and snow. I' ve been able to stay dry and warm longer in cold weather. Doesn' t seem to bother the deer either.

Pros:
Keeps you much more dry than not having one up.
Lets you last alot longer than a rain suit will.

Cons:
It does make the umbrella-getting-hit-with-rain sound, but it' s not too bad.
You have to screw it in the tree. Many states frown upon this on public land.


Give it a try if you can.. I consider it money well spent.