O'key. What is actually going on with my 10 month guy I want to explain in more detail: while being heeled, my dog is watching the helper if he is approaching wearing a sleeve and whether making those crazy movements with his hands or not, and as soon as the intruder is relatively close to me, he starts to bark and charges to the helper, trying to catch him. He is picking up the sleeve, but tries to go not to the bite area (I mean elbow part) but to the actual hand or the end of the sleeve or, if this is not accessible, to the legs or upper part of the body. One time he was almost close and the helper got real scared and started to run away (that was actual scare not a play part)and my guy was following him untill I have stopped him. But if is just heeling with me and the helper is walking aroung us with a sleeve or not, he is simply watching him even though you can see that he is ready to move. As soon as the helper takes off the sleve and starts moving this sleeve in the air but in our direction, my dog starts to back behind me. But one my movement in helper's direction, and the dog's picking it up and starts to bark and rushes towards helper. What is it - lack of confidence, wrong base work done, or we are just progressing to fast for his age.

One time he was almost close and the helper got real scared and started to run away (that was actual scare not a play part)and my guy was following him untill I have stopped him.

I have no idea who your helper is so I would never judge his competency but this sounds a little strange.

The helper is actually one of the members of my club and has been training his resenshnauzer (do not remember the correct spelling) with us. He started to do this last year with a trainer. May be it is just the inexperience, though his dog is actually really good at protection work.

Riesenschnauzer A.K.A. Giant Schnauzer

The fact that his dog is a good dog in Protection says nothing about his ability to catch a dog or read a dog.

By reading your posts, my thought would be your dog lacks confidence and commitment. By what I’ve read on this thread, and only my opinion, I’d seriously consider going back to the tug. Everything I think I’m seeing here tells me this.

Pursuit bites, not frontal.

JMO

By the way, and friendly advice. Always keep in control of what the helper is doing. If you feel something or some action of his is not proper, you're probably right. When all is said and done, this is your dog, it should be trained the way you feel is best for the dog. I'm sure the helper has the best intentions, but I'm a bit leary by what I'm reading. JMO (again)

I originally assumed you were training for sport, since you were using the sleeve, but now I'm wondering if you are trying to train for personal protection. IF your intentions are sport, you are off to a very rough start. Your dog is screaming insecurity and no one is listening. When a dog targets the end of the sleeve or the upper arm repeatedly, it is almost always a sign of being insecure with the helper. He doesn't want to be so frontal and confrontational with his helper. And a dog who backs up and hides behind his handler when approached by the helper with a sleeve is clearly in avoidance. Instead of being excited about the opportunity to bite/get the sleeve, he is intimidated by the approach of the helper. THe work is much, much too defensive, at least if your intent was schutzhund. You never want to push the limits of defense so far that you cross over into avoidance. This dog needs lots of prey work to balance his drives; it concerns me that your helper hasn't been able to read the dog's reactions and respond appropriately. Do you have other options for helper work?
Also, check your private mail.

I'm hesitant to respond to threads like this without seeing the dog work myself. But I think Sch3FH2 is right. You have some pretty obvious problems staring you in the face here. I would strongly suggest you have an experienced trainer help you out.