Just a quick question as I never was good at console shooters at all. How do you mange to hit a fast moving target like running infantry with your coaxial mg? In consoles, you have that small auto aim that helps you to lock on target but I don't think that you have this in FH2. So, how do you do that? When I shoot on consoles, I always sway around the target (again, I am not good at all but I never saw precise, quick movements on consoles).
This all comes down to tactics. Tanks are best used to deny a sector of the map to an enemy, as a supporting vehicle. Too often do they get wasted on suicidal charges into built up areas where they are sacrificed for little gain. The open country is a tanks best friend. To move around effectively undetected, always look for the low ground. Avoid silhouetting yourself on top of a hill. Paying attention to your surroundings, you can move into position while keeping a relatively low silhouette, and if your lucky you'll find a location with a clear field of fire and good cover and concealment for your tank.
Once you've moved into position, fire a few test rounds to range your shots, both with MG's and with your gun. Select some reference points for these. Find easily identifiable landmarks to shoot for, and score a hit on them, once you have done that, you will be able to fire at other objects that come on line with them. With a machine gun on the tank, this goes for trucks and infantry. If you already know how high to elevate the gun for a specific range, it becomes easy. Stick your gun out in front of the target, spray a burst, move to the next one.