I have a number of circular brooches with horizontal pins mounted off centre towards the top. That spreads the load through 2 pin holes instead of one. All have elastic on the pin, just in case. I also have magnetic ones which avoid the problem altogether.

I like Steve's idea of the 4" apron facings as any material attached solely to the pin simply adds to the weight of it and so will exacerbate the problem, although, it will may reduce damage from accidental pulling of the pin. At least, that is my take on it.