Good point Al. I should have gone into a little more depth on the hand vacuum. These holes are only found at the top of the cove. They are caused by letting the wall guide the vac head around the bottom of the pool. It is the edge of the vac head bumping the wall of the pool that causes the holes. The cure is simple. Don't vacuum all the way to the edge of the pool. Stay about 6" from the wall and you will never have these pesty little holes and wet spots around your pool.

Dennis