If they are going from Game base to game base, cloak your pirate group, jump with them. Get them on the other side of the jump with shields down. Another thing you can do is force the jump traders on firing on you while you place yourself between a base and the convoy, and get the base to shoot the traders for you. It's been done to me both tactics. They work. But at the same time, why not just let the jumpers be? It takes alot of work to get co-ords, then a team, then a route. I'm sure if you ask nicely, most traders will either give in without much of a fight, or f1.
