You can try all of the above. What I did the last time I drained mine to redo the hosing. my first priority was getting the heater core as FULL as possible from the get go. If you don't it'll have some air at it's highest point and it'll sound like a waterfall! Neat huh? well not really, it hurts the flow and takes absilutly FOREVER to correct on it's own!
Keep in mind pump on or off, air pockets will settle at the highest point they can get to, so try and keep the T(res whatever) at the highest point. Unfortunatly if you're like me your T is at the lowest point
Have no fear just "angle" the top so that the air pockets get caught at the 90 bend in the T until most of the air is out. Surging the lines dose help. Especially if you get air stuf in say you waterblock.
I advise strongly against surging if your having the "waterfall heatercore" effect I talked about earlier. All that will happen is water will splash that much more and create more air bubbles in the heater core.
Try twisting and turning your entire setup To fill the hardest parts, completly before starting to get the air out. It's easier to fill the ehater core and water blocks up with water BEFORE you start fighting with air than after.
It's far easier to add water in the beginning that not having enough in the lines once you're going and then have to add more.
Maby I've helped, maby not. I didn't read manyother posts, so I hope that I didn't jsut reiderate what every1 else said. <g>
-Toysrme