Technically I don't think they are called scuppers, but that's a different discussion. The scoop strainers like the stock one require 4 screws and lock you into either using valves or modifying the strainer itself. Using mushroom thru hulls is a cleaner install with fewer holes, more flexibility for future needs, and less under hull turbulence that can interfere with speed/depth sensors.

It's all personal preference on vented loops or sprinkler valves or check valves. I went with check valves on the rear bags and vented loops for the front.