This may not apply exactly, but it's a good trick so I'll try and describe it here. If I can get a JPEG to post I'll do that too. We'll see.
I saw this online somewhere, but I can't remember where. Nor can I take credit for an original idea.
If what you're after is a large hole and not the plug itself, as in making wheels or such, this works very well. It eliminates a lot, if not all of the stopping and starting to clear the dust from the kerf. The dust that burns so well.
Start the hole saw to mark the location of the kerf. Then drill a hole just inside the kerf, tangent to the kerf, which will act as an ejection port for the sawdust generated by the hole saw. I'd say the bigger the hole the better. It probably relieves enough tension to help release the plug too. Obviously this won't work in each and every situation, and I'd hate to have to do it 100 times over. However, it can be a big help.