Just wanted to plug a small shop, "Ed's Canoe Parts". I heard about him here, years ago I'm sure, and recently ordered an ash thwart from him. It came fast, and I'm pleased with it. Came pre-finished, which was unexpected... I'd have stained it before installation, but I like the 'white' accent.
https://www.edscanoe.com/index.html
https://www.edscanoe.com/index.html