"Large blanket pin to keep the airway open in transport. Thru the tongue and lower lip"

Most of your recommendations sound good. But I suggest that you avoid the first. Find another way to accomplish the task, without solutions that involve cruelty. I understand that EMT's are often so "training oriented" that it becomes a strange type of fixation, and they forget to be human beings. I can think of ambulance crews I knew, when I did my own EMT training. And they would sit around and laugh at doing intubation on conscious patients, who were tried down, immobilized with restraints, and then had plastic shoved down the their throats by the EMT's.

Personally, I'd rather be dead. Than to put up with "EMT waterboarding". But it's a reality out there.

My constructive suggestion - find a better solution.