My first experiment was to place the 1"x2" flashing around the rear hatch. I glued the flashing on with Gripper. I found that clamping the flashing on distorted it and it was a real pita to try and get it to lay flat along the edges. I finally figured out how to do it and it looked great. I clamped it on a Friday night and unclamped it a week later. The more I looked at it the more I did not like the fact that I could hear the Gripper stick and unstick when I pushed in on the flashing. So, after a week I knew that that Gripper was still wet inside. I did a bit of prying on the edges and yup it came loose fairly easily and yup it was still wet about a 1/4" in from the edges
. My second experiment, with a test piece, was with Great Stuff to glue the flashing on. I then tried to pull the flashing off after just 6 hours. The great stuff had nearly full cure all the way to the core. Another few hours and it would have been full cured I believe. Another thing is that the GS expands and make a much better bond all the way across the flashing. So, I will be now using GS for this application. I do believe that over a few weeks that the Gripper will dry, but I do not have that long to wait.
... So we may want to prime both surfaces of things like foam to foam (non -porous) and give the gripper a chance to tack up slightly first , then join the parts ... sorta like contact cement .. It certainly would speed up the drying process, most of the solvent (water) evaporating during the "tack up" process. Just something else to try ... 
