Hello all, I just have some questions on the right equipment needed to close my pool. The last 2 years the builder has done it for me, this year I want to give it a go. When he closed it last year, he used the solid threaded PVC plugs to close returns, has anyone tried the duck bill plugs, or the all rubber plugs with wing nut in center. Any pro and cons to either? Also going to be using air compressor, I've been reading to keep it under 10 psi. Any other concerns?