i can,t see how a pup would benfit from being doubled up. for one the older dog will catch the rabbit before the pup .if the older dog has bad habbits ie dont retrive hunts up a bit .and its dangeres.im no expert but what i do is take the pup out with the older dog for a couple of nights let the pup see afew rabbit get up and the older dog chase them. just so they can see the chase and rabbit. and see what that big white light is for .then take them out on there own the night after .so it is still fresh in there head .it has worked for me and as a person i find watching someone doing somthing