Guarantee you Pop has no strategy for James right now. He won't until the Spurs win the WCF. The Heat have too many weapons. You put your best on James and Wade kills you. You switch up and Bosh kills you. You manage to avoid those and Allen kills you from outside.
Their only weakness is that they lack size inside. Pop will want to slow it down with them, but that's no secret tactic and no one else has been able to. They score off turnovers, they shoot the 3, they shoot a high percentage, they get offensive boards, they share the ball, they move the ball well, they defend well, they even shoot FTs well.
It will be quite a feat to win a single game against them. Taking them to 7 would be monumental. Beating them would be borderline impossible. They have to play subpar and the Spurs have to play out of their minds to even stand a chance.