Try the zig-zag movement when approaching the intersection. Makes the cagers sit up and take notice, especially when you hit the hazard lights and flashing your hi-low&driving lights. They all seem to freeze and wonder "What the H-e-double hockeysticks is this guy doing?":s
But then again, some of them just gun it to get out of your way.
This is a good way to protect your lane. It's up to the ride to make sure these "drivers" don;t take advantage of the amount of space you take uo in a lane.
When I'm riding solo, I always move around in the lane to protect it. It's more of a preventative riding style then a defensive one. If other driver think they can use even one inch you your lane they will.
I do the same thing in my 4 wheeled vehicles. If I'm in the right lane, I drive near the left hand side, and near the right when I'm the left hand lane. This prevents other drivers from thinking they can use your lane to pass. It also prevents folks from cutting in on you. The perspection of a "small space" to squeeze in front of you prevents most drivers from trying it.