There's a shop in Ft. lauderdale that does fabrication for boats. We needed new edge trim ( like angle iron ) for the inside where the coach sides meet the underside of the deck. I told them what I wanted and they made it for a reasonable price.
Teak angle trim 1 1/4 on one side, 2 1/2 on the other and also with a 15 degree offset less than a right angle. 16 feet long.
Of course, that was in Ft. lauderdale.