I started off using the penetrol on the duratrim. Does ok job, but does not last long. Looking for maint. free which was what this stuff was supposed to be about. Wish they still made it so we could refresh it as it lasted years before it started to fade.
Cut some PVC trim and installed. Easy to work with, looked great, but too soft. It gouged easily.
Purchased Starboard in Seafoam color. Looks great until the sun hits it and it warps like crazy. For now, it will do though.
I used 1/2" for the toe rails and it is ok, but it really should be either 3/4" or even 1" and route the bottom corners so they don't dig into the top of your foot, route the top for looks.
I had painted my original Duratrim toe rails with Interlux and it was beautiful, but chipped easily after first season, didn't look so good.
I think the starboard toe rail, if 3/4" or 1" will do very well.
However, still looking for a solution for trim since it is so thin. I did allow some room with the screw holes for some expansion, but did not work well.
There has to be something out there that is as good as the duratrim was that is stable.
Found some carbon fiber type materials, but unable to put my hands on it to see what it is really like. Would want it to be in a color and not look like the charcoal/black carbon fiber look though.
Seems that there would be some type of fiberglass like material out there for trim that is 1/4" thick, but haven't found anything in that category yet.