Also, don't just limit to the shelter. Look for rescue groups that are home based or foster homes, whatever the term might be. This way you can usually get a better feel for the dogs personality as well. The foster parents can tell you more about the temperament and silly quirks and likes etc. Craigslist is another place. I know there have been lots of labradoodles and goldendoodles listed.
"Why does Sea World have a sea food restaurant?? I am half way thru my fish burger when I realize, OMG I could be eating a SLOW LEARNER!!" ~Lynda Montgomery