I let local glass company do it and the hatches leaked within 6 months. I used 1/2"
lexan. The PITA part is that 1/2"
lexan does not come tinted and I had to buy 4'x8' panel which was around 700$. I got to use the rest of lexan for other stuff. This year i did them myself and used Dow 795. If you get the old plexiglass out, you can use it as pattern. cutting lexan is not a big deal with a decent jigsaw.