get a tritronics or dogtra. you have to condition your dog and see what his tollerances are start on low . i would put collar on dog and use a long rope let him run arround call or use a whistle to call him in and use rope to get him to come then repeat and give him a nick with the collar ( not on continous ) . keep repeating this training only using collar once every 5 times you call him in. I would use the whistle to train that way i does not matter who calls him in it will be the whistle he is coming to.