A picture is worth a 1000 words, so here are a few thousand about the live well plumbing
I have seen the clamshell pickups but for the moment the pump works well when at trolling speeds. I've not lost any bait yet, but also don't want to run the pump dry, so will put that on the list down the road.
For sake of input, Jdupree's 222 CCP used the same system with a mushroom....it wouldn't prime consistently. He changed it to a clamshell, end of issue.