I bathe Keegan every 2-4 weeks. I just seem to know when its time, b/c her coat starts to feel funny. Kylie and Keegan just got baths today. When it is really hot out, I do bathe Keegan outside. Tho she doesn't like it at all, and I am not sure if it is more work INSIDE or OUTSIDE. But it saves on my bathroom drain.
I had my greyhound for 2 years and only bathed her twice. And I got all sorts of compliments on her coat and how soft she was.
A groomer explained it to me once that the reason why the little breeds like Yorkies get greasy is that their hair is a lot like ours, so it needs to be taken care of like our's. I don't know about the other breeds, that's just what she told me about yorkies.
Jordan, maybe, (only maybe) that the reason the soap left Timber greasy is if you bathed her outside maybe the cold water from the hose doesn't cut thru the natural grease and soap from her thick coat. I know that from pics, her fur is very very thick. Kinda like if your hair hadn't been washed for awhile and you tried to wash it with cold water. Not accusing you of anything. Just an idea. Maybe the next time, you can fill a bucket with warm water and rinse her with it as a final rinse. All tho I understand that it would be difficult without help, if she won't stand still. Maybe a friend could help. If you already do do this then I apologize, it was just a thought that ran thru my head!