Windows have two purposes: to let light in, and let people see out. Since we can't hardly see through our windows, we decided to replace them. I knocked the windows out by prying the locking strip out with a screwdriver. Then I pressed on the window until it popped out the other side. I ordered new tinted plexiglass on the internet. I also ordered a new locking gasket.
The hatch that covered the hole in the top of the cabin needs to be redesigned and remade. When I ordered plexiglass, I ordered enough to make a new hatch also.
Well, our boat will probably never have windows again.
