My dive buddies keep it simple.
If they are out of air and they have time, they will get to me and take my octopus/secondary.
If they need my air and can't wait, they pull my main out of my mouth and Buddy breathe till we figure out who gets what regulator.
Seems simple that way. If they start grabbing my gear, I just wait and see what they want. They know how to buddy breathe, so I just trust them to give it back at some point. If not, I use my octopus.
The dive ends when you get in trouble, so either way you are starting for the surface. So move to upright facing means the length of hose does not matter.
I'd try raising the temp on the heat bed and maybe on the extrusion for the first layer.
The bed arcs up in the middle when it heats, so it may also be an issue with z offset. If it is 0.35 in the middle, but 0.45 at the edge, you might just need to smoosh the first layer more. Speed also effects first layer, so slowing down sometimes helps.
Find a big flat one layer test print and see what helps. Just don't doal bunch of changes at once.