And others don't understand that no matter the power, if a move cannot be applied, it is ineffective. If the Hulk cannot reach Hal, he cannot hurt him. Also, as far as I know, the Hulk still requires BREATH. Hal could simply surround him with an air-tight bubble that moves WITH the hulk, and is out of the hulk's reach. Imagine one of those little 'gerbil' balls. The hulk wouldn't be able to break it. Not because it is unbreakable, but because it is out of reach, and moves WITH the hulk. Eventually, all the oxygen in the 'ball' would be used, and the hulk would die.
And this idea doesn't even make use of any of the exotic powers the GL has.
As I have said repeatedly, the hulk can eventually become strong enough to render Hal's shield useless. But even ripping him in two won't do much, as Hal has survived dismemberment before. And, as mentioned, even willed himself back to life. Not to mention, Hal has survived super novas, as well, so I doubt our 'piddly' little sun will be a problem.
I still haven't seen a logical way for Hulk to beat Hal :-/.