Its been in for a few years now and it is driving me nuts. my pool is in ground fiberglass. My pool guy had cement poured and had some templates he used that the cement filled as they poured it. he used some kind of wand that I am guessing was to make sure the concrete filled where it was supposed to go. In the end it didn't fill perfectly. There are what looks like chips and missing pieces where the cantilever meets the pool edge. I complained and he used cement to patch the areas it was messed up. Well within a couple years all that fell off. Is there a way to cut that away and maybe use brick or something at the edge of the pool to replace the bad edges? Maybe cut the concrete and replace it? Thoughts?