How do you spot in a Heavy Tank?

pizzastorm: They pretty much answered it.    No use trying to spot a field or over long distances since something will always be able to out-spot you. You will just take damage and not see where it is coming from.   Your best bet is to go to areas that are densely populated with cover and get as close as possible to the enemy. Find a good place to brawl and make sure not to overextend if you do not have much back up.