Look at some of the GV base taking missions that folks post. They bring tanks, supps,and troops. They also bring wirbs to protect it all from heavy a/c defenders. As far as "open area" GV fights, find a tree or other natural cover from being seen from overhead. Or ask a friend or squaddie to up a wirb, osti , or M-16 to cover you.
Still, sounds like same whines different day.