I have cut Bass Cat windshields to allow access to the left side knobs on mounts for electronics. A slow speed sabre/jig saw with a fine blade does the trick with filing and sanding to finish the job. If you are really anal about the edge, you can finish with wet sanding. Use a block of wood as a sanding block to keep a (nearly) square edge. I do not think that you can cut from the bottom on the older windshields because they would no longer wrap around the console to the same holes for mounting. I do not know about the newer ones.I believe that they are Plexiglas which can be bent if warmed in an oven. If you make a wooden form to rebend the curl and place the form and the windshield in a warm oven (not quite sure of the temperature required) it will sag onto the mold and then you can turn off the heat and open the door. Let it cool fully before handling to avoid finger marks in the softened plastic.