The Science of Stop

Grunt your rcd's play well into my next point I was gonna discuss.

My rcd's (two different types and neither like yours) are bred with many factors in mind other than speed and hardnesd. Longevity sums it up well. In order to get a dog to be able to perform like your bull greys do and do more, the must be bred different. Grey's run out of gas fast and are dainty. Two things I want to avoid breeding to. They have great structure (except for the feet on a lot) and superb eyesight that they contribute. You can get these two things and turn the bad qualities contributed by the gh into positives if you will use the deerhound and not the greyhound. Endurance and size that's not as easy diluted plus lot of times they are real hard dogs on there own capable of 1 outing a good boar. Now breed the deerhound to something a decent size and speed and lead in style hardness to something like a dogo. Why dogo and not pit type dog? Dogo keeps from diluting the length of everything for 1. Body, leg, etc. The structure of the body aids in many things to a good rcd. Style of vest needed for protection is mitigated which mitigates causing the dog to heat up more so, natural ability to hold a big boar while the vitals are not as easy to hit for the boar, effectiveness at covering more ground with every stride faster than smaller dog (whippet and greyhound both smaller and faster but we are building a pig rcd not a rabbit dog) dogo can naturally come closer to matching the speed of a fast pig than a commonly used pit or AB etc. For everything you add, your taking away something else when crossing these kinds of dogs. Got to realize this and midagate it. This is exactly why it's so hard to get an F1 type cross in rcd's to do what a well bred finder holder can do and do it several times a week till you retire it. Want better rcd's then breed them better. I was green in this thought process when I first wanted to use only rcd's to hunt with. I knew how I wanted to catch pigs but didn't know as much about how to breed for it. I spent hours talking to a guy that hunts these dogs for a living. Telling me how it's done day in and day put, what enables it to happen and dispelling the common myths about our misunderstanding of this type of pig dogging or these types of dogs. Soooo hard to break through to the unbeliever because they have seen the limitations of F1's and not so well bred dogs used for this type of work.
Couple all that I described and then work on the scenting and hunting traits of the dogs also. It's way more than most can juggle correctly. Like I said for everything you add you dilute something else, you got to be able to afford to dilute something before you can add something else. Don't think of 1 breeding, breed this breeding in order to get the next. Breed this breed with that and another with another then breed them two together type thinking and get to know people like me with dogs as well bred as mine in order to continue breed to and better the next breeding good instead of diluting to much what you have gained in the 3rd breeding by crossing to dogs that are where you want to be and already have the mixtures established in them and they are just a type of dog now rather than experiments.