On the advice from some of you here at CA, I ordered a new windshield from UPD plastics. The specs from the windshields they already had in stock were just off by inches in one way, shape or form so I sent in my shield that I heartbreakingly had to cut/snap in half but the nice man at UPD called to tell me that they had one in stock that was the same size, so for $150 or so, a new one is on the way to replace the shield I had on that was missing both upper corners, hooray!
I also brought my old seatback pad from the convertible cooler seat to have a new one made up, that will be $125 but no matter, the boat will be so nice with just both those things replaced, that is for sure. The only thing I'm bummed out about is my livewell/forward console seat cushion that flew off on the highway because dummy-me forgot to take it off before heading on the road. Perhaps I can cut out a template out of cardboard and the shop can make me up a new one for another $100-200 if it is worth it to me, or maybe I can just buy one made for a cooler of the same basic shape/size and make it work.