So obviously we need peep holes from time to time, but why are there so many, and when I'm doing brick repair, can I just get rid of some of them. I leave my top peep open, I like to see a cone drop. But the rest are kind of a waste, and when I break one with my shin, I'm wondering A. Why don't I be alittle more careful B. Why can't I plug that hole with something that doesn't protrude into the path of a shin, thigh, hip. Please avail me of thy kiln wisdom.