I also decided to use the tite seal window flashing on the underside of my teardrop. (Well, under the teardrop floor, I can't call it a teardrop yet, cause it is just a floor.) I finished laying it on just this afternoon, so I can't say yet as far as the longevity of this product. The temperature in my garage was probably in the high 50s, and when I laid it down (before pressing it with hands or roller, after that, forget it!) I had a few seconds to pull it back up if I really needed to. After those few seconds though, it was stuck good. Like Malibusurfer, I used a heat gun over all the seams and corners. This seemed to make it stick even better, and helped mold the flashing around corners and edges, as well as smoothing small wrinkles.
Oh, and I had my wife helping me for about half of the project, I cannot stress enough how much a second pair of hands helped while applying the flashing, both in accuracy of placement and speed of application!
Those of you who have used this stuff, did you paint it or cover it in any way? I was trying to decide if it needed any protection...
~If I fall flat on my face, at least I am moving forward.~