Just curious. Why would you want to use pro-seal as opposed to clear RTV? My painter laid down two masking tape lines to define a 1/8" gap between them at the edge of the plex and laid in a bead of RTV. They smoothed it and pulled up the tape to give a clean great looking seal.
I really hate working with pro-seal, and unless it is required for fuel tank sealing I don't use it. Maybe I just have a unique resistance to it,but so far so good!
Another question I would have before making this decision is whether or not RTV/silicone is fuel resistant. Part of the reason we're doing this sealing is to protect the exposed edge of the window material from fuel - this is where the crazing comes from when fuel gets splashed onto the window. I'm pretty sure Pro-Seal will protect that edge, not so sure about RTV or silicone.I have been told for many years that RTV/Silicone sealants will cause corrosion when used against aluminum. I really think Van's knows what they are talking about regarding this.