Predrill holes in the concrete block at each chalk mark, using a hammer drill and a masonry bit. The holes hold a plastic anchor into which you can install lag eye bolts. The hole must be as deep as the plastic anchor length — usually 1 to 2 inches. The plastic anchor must be as long as the eye lag bolt threads, and the eye lag bolts must be long enough to protrude 3 inches from the wall after installing the bolts in the anchors.
I always thought that I would write one day about the distortion of time that can happen around children, about how, because your level of energy never matches theirs, you can end up feeling like you’ve given them your all but then you look at your watch and see that only five minutes have passed and the kids are still at 99.5 per cent. That’s not really where the story ended up going, but that was a starting point, and traces of this initial impulse remain, like when the narrator complains about time moving too slowly when his kids are around.