Got it cap.jack that makes perfect since on correction. so just to be clear if he is stick fetch with good results and coller fetch with good results go ahead and go to coller fetch fetch to the pile?
No, those criteria are what I want before stick to pile. I may have misunderstood what you meant, but I thought you were giving back-nick-back (collar fetch to pile) with good results after you had a refusal. If you haven't, I'd work through this with the stick. As I mentioned, if you decide to continue with the stick to pile, you'll have to simplify and give plenty of freebies before trying the stick again, then be ready for the refusal if it comes, and it most likely will.
It's difficult to write about, but I see... Back - stick as dog turns+back and be ready to reach for ear immediately (be reaching in case you get refusal, don't wait and react to the refusal). The ear pinch being the foundation to the force program should elicit good response from dog (just reaching for it) if you had good response in earlier work.
I'm obviously making assumptions that you ear pinch, walking fetch, stick fetch, and collar fetch prior to stick to pile...
What we read and what you have may be different things. Only you are in a position to see what you have. So think through all the advice you read here, see if it fits with what you are experiencing with your dog.
Think also about the purpose of this step and what you hope to get out of it. Recognize whether you have already achieved it. You can always back up if you move too fast, but not without some negative affect from the confusion that moving too fast has created. So move on if appropriate, but think it through first.
Good luck.