Americentric
If, as looks to be the case, that most patent trolls are accommodated under a bridge somewhere in North America, wouldn't it be logical to sell your product to the rest of the world and exclude North America?
In practise the American market would still be able to buy the product, by telling porkies about whether they come from the land of the free for all or not, or get it through a third party that by some quirk of international trade, deftly manages to make no money.
The trolls would find most other countries patent offices staffed with higher life forms than amoeba, and thus, not being able to bring a case against a product that doesn't trade in the jurisdiction of the patent, will have nowhere to go except the ditch where they will be found face down and unresponsive.