rrasco, there may be different kinds. What makes me feel really stupid is that the owner of the barn we used to board our horses at had the plastic sheets and I really liked the look of it because you get so much natural light. I told her we would incorporate that in our barn design and she said NO: they really suck and crack.
But I figured I'd be smarter and buy the heavy duty gazillions of years warranty stuff. Well it cracked too and I didn't keep any receipts. Should have listened to her to begin with. :(

Yes, Bill, I may even just hook it to a tree rather than trust the husband to remember -although I am sure he will be there to micro manage from the ground ;)