Hi all. About to have the deck poured for my fiberglass pool. I am wondering if there are any techniques to prevent concrete from getting into pool. One person mentioned a tarp? The other question is once the inevitable happens, how would I clean it up. I assume I want the pool sweep etc off so this stuff does not go through the filter and then harden, but it seems impossible to get all of it out with a net or a dust pan. Thanks in advance.