Yes it's drilled for a closed loop. Don't really know why it was drill on side panels tho. I will be installing bulkheads and capping.i would have drilled on back myself.
When you said you were moving and water would have to wait, I thought for sure the Mrs. was in the process of decorating your new home that measures 96"x24" and has a 360 degree view through all the 'windows'. :lol_large
Your guy did a nice job on the cabinet and canopy.