So what is the most effective way to convey the pro-life message? There is no right answer because each method is needed. Also, every pro-lifer is wired in a unique way that makes a certain method work best for them.
The receivers of the pro-life message also have their own set of biases which could make one method work better for them.
Most causes, both liberal and conservative, have many different methods for the same belief, like spokes on a wheel: the financial aspect, street activism, legislation, internet sites, and even a religious aspect at times. The pro-life movement needs to be cohesive even when there are differing methods to reaching the same goal - saving the unborn babies.
There's no magic bullet. In fact, a diversity of methods is what is needed.
Don't waste too much time criticizing others for their methods. Just focus on what you're good at and what you think needs to be done.