FWIW, I never use stop-loss orders -- it’s too easy to get stopped out of a perfectly good position. IMO it’s better to sell CCs when one feels like putting in stop-loss orders and let the market decide whether or not to take the shares. At least you get paid to be taken out. And if you don’t want to be taken out, you can always roll the Calls out and up at relatively low cost.
I have reconsidered. I can use a trailing stop of 15% in case of a catastrophe.