And, sorry to say it, but Buck is exacerbating the problem by switching headgear, knowingly or unknowingly.
Three of the main reasons people wear top hats: 1) it is seen as a status symbol for competing at the FEI level; 2) they feel pressure to match the big time riders, still embracing outdated top hats; and 3) riders are concerned that they are saying their horse is unpredictable or less trained, if they wear a helmet.
All three reasons are ridiculous, but are there, nonetheless. The only way to rid ourselves of such nonsense is for helmets to be mandatory. Otherwise, you will see things like Buck reinforcing #3 big time, by switching back to a top hat for his “more reliable” horse.
A little off-topic, but interesting. It used to be switching to a “star level” was a much bigger step, back when there were only CCI’s, which equated to a long format. A Horse Trials was similar to what we have today, but a CCI was a much bigger undertaking. A CCI used to be a long format, true three day event. It was a significant difference in expectation of horse and rider within a level.
While there is still truth to that at the CCI level (minus the long format and other characteristics), the FEI decided we needed CIC’s, which are little more than a regular horse trials run by the FEI. There isn’t much difference between a Prelim level horse trials and a CIC*, other than a big fat price tag and FEI rules, including the infamous top hat exception.
So, the whole idea of wearing a top hat as a status symbol, is even more ridiculous in many of these classes.