Thoughts on this? We are supposed to start digging June 24. IG vinyl, 20 X 40, saltwater with auto cover. Live in NE Ohio. We are still deciding the liner and amt of decking (some type of concrete). I keep getting the runaround on whether or not stamped concrete is too slippery. Super important as I have a son with autism who doesn't always listen. Pavers aren't in the budget. Thoughts? I am thinking perhaps a colored concrete with a different colored concrete coping? I thought about flagstone for the coping but am worried about the saltwater with it.