you need to do all the basics first,stay,retrieve,sit etc build up all the trust with the dog at 8 month he is still apup and doesnt need to be rushed into anything at the moment,talke him out let him see a few see how keen he is to chase i have an 8 month pup and he is real keen but still not let him although he wants to,let him see another dog work if their is one he can watch,iv only had 2 lurchers the mother to my pup and the pup i never realy had to do much work with my bitch most of it came naturally and hopefully will with the pup,good luck