I'm going to use clothespins to hang the wet dog on the line to dry.
Why do you want to hang up a wet dog on a clothesline for?
To get the smell out of them... I don't consider it cruelty because I am helping them.
I understand you do not like the smell of a wet dog, but you should not hang up a dog on a line with clothespin to dry them. That is just cruelty to the animal. You towel them off or use a hair dryer.
To me it is just a bad smelling dog. Doesn't hurt that I can save energy by doing so.
It is nice that you want to dry the dog, but it should not be done in a way that is hurtful to them.