Some great information there EWO, just the kind of things I was hoping to bring up and get peoples thoughts and theory's on.

I still have the carpet mill in the video and use it regularly conditioning my dogs, the dog trotter I ended up selling, I only kept it for a month and found it to be more of a temperamental pretty looking ornament than the kind of rugged tool you use day in day out working your dogs. I replaced it with a killer spinner which seems to be a bit more durable even if it did take a year to have delivered lol.