From my experiences, it isn't so much the flash (however I have difficulty getting someone to allow strobes, even if mounted up high), it is the liability and the danger. While to many, it may not seem so, it is probably one of the most dangerous things to shoot. Especially the rough stock. I've climbed many fences and have had many man-less horses blow by me within 2-3, at full speed. Quite honestly, I've had many contestants say I'm crazier than they are!