Anyone know the process and set up for using an air compressor to blow out pool lines when closing? Last year when the PB closed my pool they had a set up which had a pressure gauge, valve, ect. they used to blow the lines (from what I can remember). I don't remember where they attached (skimmer?) to blow the lines or how they hooked up the compressor. I was going to pay them to do it this year and be more observant, but before doing that thought I would fish around here to see if anyone has advise on this.