Can anyone tell me if there is an easy way to block pool return jets (with the eyeballs left in place) temporarily while I work on the piping? It seems like there should be a way to place soft rubber "mats" or something over those supply jets and let the water pressure hold them in place. My pool equipment is below water level and I need to drill holes in the return line to install a chlorine erosion feeder. Thanks for any help, Nick.