I have figured out that modifying the UnitSub file in the data\menu\gui\units folder is the way to erase the circle (or dot depending on your mod) that represents your ship when not soomed in too much, but I can't get rid of the tail (defeating the whole pourpose of it all)
I'm currently using Grey Wolves, and now I could switch back to other previous mods that do away with the tails, but I don't want to change whole mods just to nick a freakin tail, anybody know what file you need to tweak?