Tie Down Floating Pontoon Trailer Guide-Ons The Tie Down Floating Pontoon Trailer Guide-Ons make launching and loading your pontoon easy. Designed for submerged trailers, these PVC guides automatically rise up adding an additional 12 of visibility for a total adjustable viewing height of 24 - 36. These guides feature bright orange end caps to provide a clear target when loading your pontoon boat. These guide-ons are designed to be mounted between the pontoons. Tie Down Pontoon Trailer Guide-Ons