By salty, I mean wayne23, who says he used it on Green River and Leyland boats, which were vulcanized neoprene. Leylands probably date back to the 70s. Gaco is rubber paint, or liquid rubber. It adheres pretty well on neoprene, not quite as well on hypalon (even the hypalon paint). We used to repaint neoprene boats every season or so. It would help protect worn areas, but not as well as a wear patch, or maybe urethane. It is not as abrasion resistant as urethane, but I would paint it on a neoprene boat in a heartbeat. It's not cheap, though, and hard to find these days.