That has not been my experience at all, Wendy. Both agility trainers I have worked with instruct short nails and admonish students who do not comply, as their dogs scramble and slide all over the equipment.
“Not safe anywhere”? I think you are being overly dramatic. I have never, as in NOT ONCE, had any sort of injury related to one of my short nailed dogs (oh, the horror!!) biffing it. Biffing it is a terribly rare occurrence, anyway, and, thinking back probably happens less often than when I left the nails longer.
GLR, I just did Koa’s nails and have some photos for you. I will figure out where to upload and post here when they’re ready. I will brace myself for the wrath from Wendy for abusing my dog in such a manner