I judged a bunch of La Fletch in TX about ten years ago and I don't remember them being crazy in the cages. The brown Leghorns usually are though. I have some New Hamps free ranging and they are as crazy as a March hare outside, but when you put them in a show coop they are as good as you would want. I show some pretty high strung breeds..what I do to train them is: I put them in show coops.the kind they will be in in a show. They spend part of every day in them. When they start to tame down I run a stick across the wire of the cage every time I walk by. Food treats can help after they are reasonably calm. You need to start the training with enough lead time that any feathers broken in the beginning have time to grow back. Keep in mind that people like to congregate right in front of nervous birds........I have no idea why, but it seems that way.
Look down the show coop aisles.....the cages with no sawdust left are the nut case birds. Crazy birds usually don't do well in shows..I don't spend a lot of time looking at a bird that is hanging upside down in his cage.
Walt
Thank you for the tips Walt.