Not just for pentetration, on scattered wrecks in low viz you lay a line from the anchor along the wreckage, tying off along the way so if the line gets cut/broken all is not lost. Cave arrows point back to the anchor.
Then as you go exploring off that line you either keep in in sight or tie on a smaller reel, I have a finger reel that is also used to shoot my marker bouy to the surface duing blue water stops. You explore out that line and then retrace. Move back toward the anchor and repete until you get to your turn around time.
If everyone has layed line then it’s easy for the DM to see how many dive teams are still on the wreck as the main reel is reeled in.