hit up taco metals they should have a 3/4" x 3/8" rubrail with rubber insert that fits most 18 footers. rexmar.com also sells anodized rubrails, but they're picky on where they can ship to as they ship it in a 12 foot straight section in a PVC tube.
In my best "grandad" voice with a cigarette hanging out of my mouth.... "if a day goes by and you learn nothing, I hope like hell you got a lot of sleep"....
Anyone know what type of rub rail will fit my boat 18 ft Eliminator?