This is a tool to help covering your pool. If you're alone and if there is some wind, you will want to temporarily use the clips to cover your quick-up frame pool. It is not meant to use it instead the dedicated cover fastening! Also you can use it to pin the folded cover outside to one sector of the opened pool.

Tips: I recommend to fill 100% by just increasing the thickness of the outer walls. So you print faster and you'll get ia laminar structure following the figure - that results in a higher strength. For longer exposion to weather and sun i'ld use PETG. But mine are made from PLA and they do fine. Print from the flat side without support. I used 3DLac with PLA and so i needed no brim.