The ones I’ve been in not all the dogs knotted, they probably would have if there’d been fewer distractions. But with a garage full of horny, sweaty guys and other horny dogs it seems to take more than horny sweaty me to keep some of them focused long enough to finish their turn.
These parties always had the same structure, first round each dog one at a time, then back into their kennel, second round owners would gangbang me, third round owners could tag team me with their pup—usually some sort of spit roast, some were done after the gangbang. Any owners after that who wanted another go were welcum to a fourth round.
Any dog that couldn’t stay knotted I usually just finished him off with my mouth, occasionally some dildogging if he would lay still. I never had a problem with unwilling partner, just distracted partners.