Well....im NOT gonna get into that can of worns anymore.....my opinion on help dogs is probably well known.
To answer your question......there were help dogs in their yard as well as strike dogs. We would hunt pups on occasion just like anyone else who already has a full team of experienced dogs. But most of the time the pack would consist of a couple strike dogs and a couple "help dogs".
I was talking about their dogs, not yours... And as far as help dogs, I was referring to say a 3 year old dog, not a pup... 
You seem to have a lot of knowledge about how the bay pen dogs work... I'm curious as to how they correlate with woods dogs...  I've seen good woods dogs that would climb out of the pen and others that were straight catch in a pen, but bay in the woods... I've also seen ALOT of pups that started baying early turn out not even close to the caliber of woods dogs that pups that would rather run around and explore and not bay a hog...