Whats important to you in selecting a bull ?

I spoke about this is another forum, and of course everyone has different things they look for in selecting a playmate/bull
I will share what I said:
” All I can speak for is how me and my husband approach it. I am a Domme and he is submissive to me and me only, not to the bull., however he will serve the bull however I direct. We have ground rules so its always and enjoyable experience and no anxiety.
Now 99% of the men out there really have no idea how to work with this fetish, they just look at it as, excuse my french, “a free piece of ass” So I avoid these types totally. They also have to understand they do not control me or the scene..I do.
I also do not just jump into things quickly, I like to establish some chemistry with the bull so we all have a rapport with him to create a comfort level for all.
My husband serves how I direct, whether it be at my feet while I flirt and make out with the bull, or at the side of the bed, or outside the bedroom door bound, or in a corner hooded, bound, and in chastity or just c&B bound up with a leash on it that I tug as I enjoy myself. So many ways, these are just a few examples.
His job is to refresh drinks, bring snacks, provide a warm wash cloth during play to freshen both me and the bull, and he also is to wash the bulls cock & balls after play. I also have him lick me clean after play (I do not do bareback).
But the real fun starts after the bull leaves, and I then discipline my sub if his performance wasn’t up to snuff, and do extensive cbt on him that leaves him so sore he couldn’t even cum if I allowed him to. He is never allowed access to me 3 days before and 3 days after play….and I love the torment
But back to the question..the bull has to understand my husband will always be present”

He also uppermost needs to respect my husband because I love my husband and not looking to replace him, just enrich our sex lives further since my husband cannot always provide what I need.