Well, I covered the stab and flippers of my Coyote using a covering iron and iron sock on the Ultracote.  By the time I was finished, the sock had a hole burned right through the middle and residue was stuck right to the sole plate.

I am new at this plastic covering technique.  They say Ultracote should be applied @ 220° and tightened @ 240°.  Unfortunately, my iron isn't calibrated in degrees.  It seems that DEFCON 1 was too high.

I ordered 6 new socks from Tower Hobbies.  Another delay.  This airplane will have dry rot before it ever gets airborne.

Add the Hanger 9 iron to the order. It is calibrated in degrees and makes applying ultracote a snap instead of a chore. Also shaped better IMO than the old monokote iron. Money well spent if you use ultracote.

The knob on my iron isn't indexed but I've learned about where to set it. I used a sock on my Ultracote the first time I used shrinkwrap, and then a gun to tighten it. But after switching to Monokote, I don't use a sock or a gun anymore. I just use the bare iron to shrink the wings one bay at a time starting at the root. #1 top, #1 bottom, then #2 top, #2 bottom, etc. I think it's less likely to over shrink and twist the wing that way. But I get a sore elbow the next day too. Monokote's temperature for adhesion and shrinking overlaps, where Ultracote has a wide gap between the two temps.
Rusty

A couple of years ago  I went to Wal-Mart and bought a bag of baby socks to use on my iron.  They work great and I still have a good supply....

Mike

Never thought of baby socks.   The old DOC thanks you.