I have a set amount of money that I spend at a trial so 7 or 8 runs wouldn't matter to me at all. This weekend I am running 4 dogs in both TNG and tunnelers. I guess because all of my dogs run differently, it doesn't get boring because I have to figure a way to run all 4 of them. What IS tough is ONE walk through for all 4 dogs because I DO have to figure out what I am doing with each of them in the limited amount of time. And then switching my mindset between dogs and remembering which dog I am running....
Time is also a big, big, factor in why I don't like running all 3 dogs in one double format class - at least anywhere there aren't separate walk through.
Part of it is having time to come up with appropriate strategy, but some of it's also just plain' fair to do the dog' issues. I tried all 3 of mine in T'n'G. EVEN WITH them in different height classes, and levels, being that it was a small trial and there was a single walk through, so they got pulled, had time to pee (barely) and then hit the course.
Some dogs do fine with that.
Mine need a little more to figure out where they are, what we're doing and to connect with me.
That one isn't a double run format issue though, except in as much as this entire too hurried process would then be repeated.
Which would jack them up higher.
Not an issue later in the day, but first one? Yeahno. Not for me and mine.