Most pilots I have flown with just need to work on learning gun arcs and reload times, then remember that the Goldfish has two side guns. I hate sitting on a Goldfish side gun with another ship almost in arc while their armor is down, their guns or engines are disabled... and the Hwatcha is starting a reload.
It does seem to be an epidemic, yes. One way to really help is to ask the front gunner to call Hwacha reloads as "reloading," "50%," "75%," "arming," and "ready." This gives even unskilled or unaware captains a constant idea of when the Hwacha is ready to fire, and, perhaps more importantly, when they should swing
off the side guns to bring the main gun back in arc.
Also, don't feel above reminding your captain that the side guns exist: if there's an easy target that I've ignored due to tunnel vision, or I've missed a key piece of information (like having a side Mortar and not noticing the armor breach on the primary target) I
want my engineer to call for the side guns. If I've got a side Gat or Flamer that's got a nice line of burn I
want an update on range and/or ammo remaining, so I can keep him in the damage until his hull drops or the flamer is out of ammo.
Long story short...communicate about the side guns. Call your proximity to them, or ask which side is about to be brought up. Remind inexperienced captains that the Goldfish actually does swim like a fish: forward, side, forward, side, forward, side, trying for the bifecta as much as possible (if your guns allow it). Any good captain should appreciate the communication: worst case scenario you're telling him something he's already aware of, and I know when my crew tells me that stuff I already know it usually just reassures me that we're on the same page.