Handling many contacts

[blackcan]

All those tips helped me a lot!
Now I reached mission 5 in the campaign and this mission is really hard I had 8 submarine contacts and 2 surface contacts and managed to clear out all the mirror contacts but due the really small area everything Ia unbelievable confusing because a lot of times contact crosses each other and suddenly I notice a new contact

And all subs don't drive a constant course they drive like a zig zag (since a rebel submarine attacked a Russian one)
So I even got a hard time to determine the position with tma even tho I read the guide from tachmen but I need more practice I guess