I have cement around my 18x36 inground pool and I need to add a non slip coating. I would like to find what has worked well, and that which has not, for you. The cement around the pool has been there for 15 years and it seems like the paint I have applied over the years has filled in the rough surface originally brushed intro the surface. I have read reviews on a number of name brand paints with aggregate, some products that go on clear over the surface with aggregate and also the poly coating that claims to provide a cooler surface. The reviews are all pretty mixed with no clear favorite from what I have read. Thanks for taking the time to help.