i doubt you will be able to find a reputable, responsible breeder who produces crossbreeds. here are some signs that the breeder is the kind you are looking for:
- breeding animals are tested for genetic health problems like hip dysplasia, heart problems, eye disorders, hypothyroidism and so on. ask to see documents on this, don't just let the person get off with telling you the dog has been "health checked by a vet". this goes for
any dog you buy from a breeder. also do not let them get off with statements like "there is no need to test for XYZ because it's not common in my breed".
there are many oher things to keep in mind, but pitbulliest has written them out in a great post that i will just link to instead of writing it all out again:
http://www.chazhound.com/forums/showthread.php?t=787
after reading all that, if you can find a schnoodle breeder that fits these criteria of a responsible breeder, go for it.