Actually it is not that difficult. If I can do it anyone can if they have the right tools.
You need a stable surface to work on. Use masking tape along the area to be cut. Use a fine toothed blade. Go slowly.
There are many sites that give good instructions just search "how to cut plexiglass".
Did you want to keep the plexiglass window?
If not maybe you can remove the plexiglass. Cut the center out to make a frame. (You would need a drill and jig saw.) Drill holes around the frame. Add hardware cloth to the plexiglass frame. I'd use small bolts, nuts with lockwashers to attach...
I don't add much to my garden soil. I had testing done several years when I first started gardening on this property. After a while I noticed the main thing I had to do was adjust the ph every 3 or so years. Our soil tends to be very acidic. Great for blue hydrangeas not so much with most...
I have grown Charleston Gray and Carolina Rattlesnake. Both are sweet and get large. Had a few Rattlesnake go over 60 lbs. This was on a vine with lots of room, well fed and fruit thinned to 2 melons per vine. I continued to save seed from the 2 largest to grow the next year. I may still...
Good luck with the yellows!
All in one bed I have a couple plants each of pumpkin, butternut squash, watermelon and cantaloupe. The vines all run together. The cantaloupe is always ready first. Have to be careful picking those.
I am seeing die back now in that bed. I will be harvesting pie...
I know. I need to fix that.
Heck, I have barely grown the green ones this year. Dang weather! I do have enough for a couple meals I just picked. Will process those today. They are still making blooms so maybe I will get more.
My chickens love pumpkin. They peck until the rind is paper thin. It makes the egg yolks very orange.
They also seemed to enjoy the butternut squash last year. It colored up the yolks as well.