We use Team Nav Lock quite a bit, and it is quirky.
The best feature is the "auto-dropout".
- The way we use it is, we both go looking for Threat 5 Non-Human Signal sources in the same system in supercruise.
- Whoever finds a good USS is the one who the others lock on. So if I find the Threat 5 first, my buddy locks on me.
- As soon as he has confirmed he's locked, I drop out to scan the Thargoid.
- If my teammate is close enough (but still much much farther away than a normal dropout of 1 to 10mm) he will drop out too, and right next to me.
- If he's hundreds of LS away, he just flies towards me until he auto-drops out.
The process that doesn't work well imo is the "follower mode."
My friend and I once jumped all the way to Colonia, and we found the nav-lock follower mode is really bad :-(
- In this example teammate 2 locks on to teammate1
- When teammate 1 jumps, teammate 2's FSD will charge, and if he's close enough to where teammate 1 jumped, he'll also jump when fully charged.
- The first problem is teammate 2's FSD doesn't START charging when teammate 1 does. No, teammate 2's FSD starts charging AFTER teammate 1 actually jumps.
- The second problem is you have to be crazy close to your teammate to jump as soon as your FSD is charged. If you're not, you have to chase down teammate 1's wake.
- In both cases, teammate 1 is sitting in the new system waiting, and waiting, and waiting, and waiting for teammate 2.
- To make things worse, you can't come to a stop in supercruise, so while teammate 1 is waiting he is also getting farther and farther from where teamamte 2 will emerge (unless he starts flying in circles, which for me makes the waiting even worse!)
So after several jumps, and having to chase our teammate for longer and longer distances, we gave up on nav lock.
And no, if teammate 1 jumps before teammate 2 enters the system, there is no teammate 1 wake to follow.
In summary, the nav lock for dropping out is pretty awesome (it gets your buddies really close to where you drop out without having to get within 10mm) and also super helpful with Thargoids since you and your teammate will NOT see the same USSs, making nav lock the best way to come out in the same place.
But as we found out on our way to Colonia, the follower mode isn't so great (well, unless the invisible nav lock manual has a trick in it we don't know about... ?)
IMO To fix it the follower mode for nav lock, FDEV would need to start the follower's FSD charging when the leader starts charging his. This would likely make all the difference, but after 6 years of playing we ain't holding our breaths.
Fly safe CMDR!