make you a circualr wire pen about 20 ft in diameter. on the outside of it make another pen a foot out. put the dog in the inside and put the rabbit on the outside track. make the wire so the rabbit cant get out and the dog cant get the rabbit. let him run that a couple times a week till he starts he getting real crazy for the rabbit. then you can make a drag. then you can start letting rabbits loose and have him run it. dont do the sircle pen too much youll have problems.