measurements

above ground oval pool, Steele wall, older model, no owners manual, inherited with home, beaded liner. In the process of changing a liner. I’m getting 48inch depth around most of the pool and 50 inch on one end. Is it preferred to round down or round up? Options are 48 inch depth and 52 inch...

I did some research but still having trouble. Does anyone know if you should size up or down when measuring for above ground beaded liner? My pool is oval, measured multiple times and getting width 15.5 x 29 length. Do you believe a 15 or 16 width would be more appropriate? Any help appreciated.