doubleing up on foxs is un heard of in my neck of the wood ive got 3 dogs here that kills foxs single handed and anyone i hunt with have them it just takes time to get the right dog to do the job the only time i double up is with a pup and one of my old dogs to get them started which ill be doing next season as i have 2 8 month old pups that i bred. it sould be good to see how lucky and joe ox pups come on as they will be starting the same time as mine