Beat way at dodging TOWs I've found, is to fly unpredictably. Don't make it impossible for hour gunners in the transport/attack heli to get shots off on anything but flying in a constant straight line over an area with enemies is a great way to catch an RPG or a TOW
Use freelook while flying, most of the time the first rocket will miss, and you can look around to see where it came from and either take them out, or avoid them.
Don't be too passive at avoiding places, but don't be overly aggressive, flying straight at the enemy front line at the start of a conquest match is not a great idea, play to the helis strengths, LB is great at hit and runs, or clearing off infantry off a point. Attack heli is good for beating on armor and the transport heli can be extremely useful for things like obliteration as a spawn point for the team, and if you have coms with your gunners, you can absolutely melt anything below an IFV
With the ammount of TOWs and how prevalent the RPG is, you WILL get hit. Flying low avoids AA but high avoids RPGs so don't stick to just one area