Because of cabin shapes straight might not work in all cases. I agree stainless is a stronger zero maintenance way to go. But there should never be a leak into the core with a proper installation. If the holes are potted as shown in the link I posted there should be no problems in the future with leaks, whether wood or stainless is used.
I am having to replace hand rails on my 29' Bristol and wanted to know if there is any reason why I can't just seal the new ones made by Seateak with polyurethane?
Any help would be greatly appreciated!