Anyone have an Australian Cattle dog?

I've had this 5 month old puppy for about 2 weeks. He's half heeler and half husky. He is sweet and makes great eye contact but play bites big time so my hands and arms are covered with scabs. I read online to make a yelp like a mother dog to stop this. He will stop if I yelp or say no but will instantly do it again. I have a gazillion things for him to chew on.

He will sit on command and is so good around my cat. If he nears my cat and I say no, he will listen.

I'm out in the country so he can run all day if he wants but when I'm hiking with him he keeps jumping up on me no matter how many times I say no. I say no - he stops - runs around and comes back and jumps on me. Yesterday, a man in my small town saw me with my puppy and came up to me saying he had the same type of dog and was I having problems with the dog jumping on me. The guys hands and arms looked just like mine. On a leash, my puppy is great but when he's running , he becomes a psycho. Maybe he is trying to herd me being he's part cattle dog.

Any suggestions???

Manafort planning to leave US as Muellers team prepares to indict him in Russia probe