Score more points than them?
On a serious note, I think the only way to beat Miami is going big and take a very high risk/reward game on crashing the boards and a certain defensive take.
The gameplan on offense should be no different. But everyone but Lee or T-Will or any 2 guard who's on the floor should go for the offensive rebound. We have to go big with Wilcox, KG, White, Melo anyone who has length and size. Four people will crash the board. It's either we give up a fastbreak score or we get an offensive putback.
On defense, Lee and Avery and T-Will should constantly switch assignments to blanket Wade. First possesion would be Bradley, then Lee the next, you get the point. KG gets Bosh and who ever is guarding LeBron, make him shoot jumpers. If we are going to lose to Miami, it better be on LeBron's jumpers, once he gets to attack, we have no punchers chance. ANd again, 4 guy go for the rebound, forget the fastbreak.
We get more possesions, we have a better shot of winning.