Hi, I have been reading a lot of the threads on here....great site. My question is what material are people using to backfill their vinyl liner pools, and how long they are waiting for it to settle. Of course no one ever wants to wait for setteling, one concrete guy told me to wait 2 months, but if a pool builder installs your pool is does not take 2 months until complete right?, so what are my options and how long do you recommend to let the material set before pouring concrete..........thanks in advace..............vin