I watched Sparsholt stroll into it's barrier, Geelong R2, so relaxed, like it owned the barriers. Looked every bit a winner ($4.10)

I wonder if anyone has toyed with the idea of maybe Laying or Backing a troublesome nervous horse as a system? A horse that's got in it's mind, that it'd prefer to be somewhere else, than in a barrier about to race? Maybe the opposite for relaxed sleepy horses? Dunno?