MEMORIZE THAT SPOT mark it with a grease pencil or use an identifiable part of a window frame whatever. Look ahead and to the left at the cone placed ahead of the aircraft. Where does that cone appear on your glareshield??? You now KNOW where your left wingtip is going to be in the future when the aircraft moves straight ahead.
Excuse the SLF question, but could someone explain how that would apply in this case.
It seems to me that this may identify a position in the ground where the wing tip would pass over, but it would also require the pilot to estimate the relative position of the tail of the other jet compared to an imaginary line extending from that point upward.
Perhaps it's a lot simpler than I imagine (I'm imagining that you're still seeing this from an angle, and that night/wet isn't going to improve things).
I'll shut up now.