RE: Monocote over Ultracote?
My tiger 60 ARF came covered in ultracoate. I've NEVER seen a roll of Ultracoat.[&:] (local shops have never carried it... they always sem to have Monokote, Econokote, Towerkote... Saw Solarfilm a couple of times... and one place had Coverite.)
To seal up the joints when I put on the tailfeathers, I used strips cut from Monokote (the color ALMOST matches... can't see it from 5 feet) And... I ran the iron temp right up to where I normally do for shrinking/seling Monokote. No problems at all.
Then, I went over the whole airplane with the iron at that temp... No holes.