Inquiring minds want to know what kind of tree straps you use. I'm guessing you are using nylon tree straps and they are stretching overnight.
Thanks for all of the thoughts here. I will definitely try the milking thing. The straps and Whoopie Slings as well as the toggles I purchased from Arrowhead Equipment it was their Marline Spike Hitch Whoopie Kit. The straps are polyester. Any other thoughts? This is a great place to gain knowledge. I gotta admit that since I came across this site I have spent at least 2-3 hours everyday reading, learning and laughing.