Hoard Train
Another way to limit yourself is to focus on training, instead of showing.
You can do both - in that there are obedience shows where you show off your dog's training, not just his grooming, and conformation.
Once you take a dog through basic obedience, you don't dump him, you go up to the next level, then the next level.
Once you have gone through the levels you can focus on winning with the highest scores - actually you can do that while you are going through the levels - but that's a lot to ask.
And there are performance clubs: mushing, herding, tossing disc, lure coursing, tracking, dancing, guard dog, weight pulls, earth dog tunnels, rally, agility, or you could just train your dogs to star in funny dog videos and put them on YouTube.