In SoCal, I'm petless and thinking about building a 14'x30'x (3.6' to 5' to 3.6' deep) vinyl-lined sports saltwater pool using concrete walls, vermiculite floor, extruded foam floor, ceramic tiles at waterline, vinyl liner track below the waterline, and pool cover. The reason for using concrete wall instead of cinderblock is that later, a sunroom will cover the pool where the sunroom footing might be within 1ft of the pool wall. I'm fine with changing the liner every 6 years ($4k to $6k). So it could cost me $6k x 5 = $30K in 30 years. If cracks develop later in the vermiculite or concrete wall, I'll buy a cement kit to patch the cracks. The terrain here is 1300' above sea level. Most pools around here have plaster/pebble/quartz/pvc/etc. but I'm thinking that any crack repairs might be noticeable and costly to repair. Does it make sense to build this vinyl pool in SoCal. Also if you own a vinyl pool in SoCal, I'd appreciate feedback on pool specs and operation issues.