I have a small job for a relative with cracks and some chipped out concrete on their pool deck. This concrete area has nothing to do with the pools ability on holding water it is only the portion you walk on. I was told by a local if the crack is about 1" wide to undercut it in a upside down vee shape " ^ " and fill it, not like this " V " and smaller cracks use a gray caulk. Color match is not very important they are more concerned with safety ( tripping ) and preventing things from getting worse. Any products or techniques you can recommend are greatly appreciated. Its not bad enough to tear out.