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I fill the funnel up and bleed the heater core as good as I can then put the hose back on that. I crack the bleeder valve on the IM until bubbles go away and it's flowing straight coolant , close the bleeder and squeeze both rad hoses, repeat cracking the bleeder until no more air bubbles form.
I then start my car, have my heater on and blowing, crack the bleeder again, squeeze the hoses and repeat until I can hear no more air in the system and the bleeder is flowing straight coolant. Sometimes i'll turn the car off after it warms up, let it settle and continue bleeding with the air bubbles that have accumulated. Also, yes the front of the car is elevated during this process.
I feel like I'm pretty thorough about the bleeding procedure.
After I've been driving and it starts to overheat, my whole upper rad hose will be empty with coolant and full of air. The level of coolant gets below the top of the radiator fins.
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