Yeah, it would only be 1 or 2 changes each week. Of the 20 horses, 10 of them would be horses that you MUST keep in your stable all the way through no matter what, while you could replace 1 or 2 of your other 10 horses each week. Maybe not 20 horses, perhaps 16 or something like that.

Anyway, don't worry about that now. We're not using those rules on the current stable.