There is a company called "Cruising concepts" (google them) will custom cut the tinted window, will properly chamfer the plexi edges with their CNC milling machine and provide the adhesive and provide detailed instructions. You can discard the screws with their process as they are no longer needed and it is the screws that cause most leaks anyway. Am told it has to do with the different modulus of expansion from temperature changes between metal, fiberglass and plexiglass.
Further, even though you do the work, they guarantee no leaks or they send new windows and new adhesive for you to do it again. You supply the blue masking tape, alcohol, plastic disposable putty knifes, disposable gloves, acetone, and labor. I also used a blue tarn to cover the window for a few days to keep sun and rain off during initial cure and one on the inside as a drop cloth to catch and drips during cleaning and application.
Just remember apply the 795 and get the window set in place in a max of 10 to 15 minutes or the strength of the 795 can be compromised. in three hours you can trim the 795 easily with a plastic putty knife. I use plastic putty knifes so I don't damage the gel coat and start cracks. They cost about 99 cents each and I usually buy five each time I do a job to replace a window(s) throwing them away as needed.
Some people use sand bags, i use weights 10-15 lbs hung on lines for side windows to gently press into place for three days till the 795 gets some strength. It takes over 21 days for 795 to completely cure but I sailed my boat in three days without problem.