I'm not clear on exactly what you got going there
Me neither, but here are a few thoughts,
The tubes should be firmly attached all around the hull. That's not a good look you have. Are the glued on, or do you have a guide type attachement?
I'd be pretty sure that's where the water is coming from. Probably waves are getting trapped between the tubes and the hull and forcing the water through - like a blow hole. As the boat settled the hole would be underwater and not drain.
Is there is water in the hull cavity? - that would point to a problem with the hull itself rather than just the tubes, which is more likely IMHO.