Patience is the key to covering, I know when I get fustrated I just stop and go relax for a while and than come back later in a better frame of mind. If I continue when things go wrong they just get worse and worse. I find after building for 20 years trying to rush a job just brings bad results. As for moncote or ultracote, I use monocote simply because it lasts longer and stays put better. I got planes 8 years plus old with monocote that still look good. I use ultracote 2 times and both times I had trouble with the covering wanting too lift at the edges especially the trim after flying the plane for a while. Since it is a low temp. film if it is hot outside ultracote can come off the plane while flying. I had some come lose and peel back on my wing once on a hot day while flying. While ultracote is easier to apply It just does not stay put as well.