It really isn't rocket science. Any car that comes with a bleeder screw/valve, should be used. They didn't put it there for no absolute reason.
The pouring slowly method works well because air can pass up, and out of the engine better than thick(er) water/coolant. Thus, filling your motor from the bottom(radiator).
Just think, water will flow to the lowest point first. You are filling the radiator, the lower hose, and then the engine. When you blast in fluid and kill the flow of air out of the upper hose(bleeder area), you wont have any point for the air to escape.
...don't make me bust out MS Paint