Your boat was built with a Scotty, RAM, Cannon, or Fish-On mount pattern, and now you want the RAILBLAZA locking-slide accessories on it. This is the bridge. The StarPort HD drops straight into that four-screw hole pattern — no adapter plate, no extra hardware. You get the familiar RAILBLAZA locking slide in a lower-profile base than most competitors, so your rod holder or accessory sits closer to the deck line. One maintenance note RAILBLAZA flags: keep petroleum-based lubricants off the slide. Use a silicone-based product instead, and the mechanism stays smooth for years