Here is a little background information. We do not have a great deal of experience or have a regular helper in our club, therefore some of the bite work has been less than desirable. In terms of presentation, on the sleeve and reading the dog, I'm the most experienced with doing helper work, which is not very experienced. So, I try and guide the helper while I'm handling my own dog. Unfortunately, sometimes this leads to pressure from both sides. It seems to me that this pressure combined with poor mechanics, lack of knowledge, and a lack of presence by inexperienced people trying to learn the work is deteriorating my dog's grip.
Is there anything that I can do to make his bite more firm and calm? If there is, should I also stop doing protection with inexperienced helpers?