I empathize with your increased lack of resources based on being in hawaii.
You're on Oahu though... Surely there's some part outs in Facebook and Craigslist classifieds now and then?
Melville and Moon might be an option. The covers I’ve seen in real life are amazing. Here’s a discussion in general too that might be helpful if you’ve not already seen it. https://expeditionportal.com/forum/threads/d3-lr3-seat-covers.157134/