try it in the passage of the house or ally way some where narrow so he can,nt get round you use a rolled up sock or a puppy training dummy, tennis balls keeps rolling then it becomes a game of chase !! which you do,nt want do,nt throw it too far a few feet in front of you to start, the main point to remember DO,NT OVER DO IT, spaniels get bored very quickly, how old is the dog if it,s only a pup then forget about the retrieving , and just let it be a puppy .