Actually, I gotta vote for the heatgun too.

It's just about the perfect device for getting rid of wrinkles. It's safer than the iron. It's quicker by far. And it doesn't overheat or under heat.

If you hold it "too far" to remove the wrinkles, and slowly bring it closer until the wrinkles start to pull flat, you've just discovered the perfect "temperature". And it's dead easy to maintain that perfect temperature. And you see exactly how long it takes to remove each and every wrinkle. As soon as the wrinkle is shrinking up, move the heat and you've just used exactly the right amount necessary to do the job and no more than necessary. And since you're not wasting time on any wrinkle, ironing and ironing, you're taking only as long as necessary for each wrinkle.... win win win.........

The only problem with the gun is that you do need to use an iron at least once. You'd better run the iron around the outside edges of all the covering. ARF workers don't always get the monokote stuck down everywhere.

BTW, it's personal preference, but that silly looking thing that sticks on the front of the gun works better for me than just using the gun without. I find that it gives me a more easily controlled airflow "shape". I can work the air right up to tip ribs etc without going "overspray".

You're controlling the temperature the monokote feels by holding the gun a certain distance from the surface.
You're controlling how much heat the covering is subjected to by moving the airflow away as soon as the wrinkle shrinks.
You're not wasting any time at all.
The airflow can go around, under, or over anything like pushrods etc. The iron can't.
win win win win