I do use them and get tired of taking covers on & off. Always worry about putting the covers when the lights are still HOT. That's why I thought of the stone guards. But now that you say it, I've never busted a headlight, so probably never bust a hilite. ThanksJust take them off and leave them off, you will melt them eventually for sure and the odds of catching a rock that cracks a lens are about like getting hit by lightning. It also looks like you might actually use them and didnt just add them for the yellow cover look.