Mark's Marker is a handy device for marking offshore debris and underwater structure. Made of corrosion-resistant PVC plastic and painted a high-vis fluorescent orange, the 30" marker is easy to throw, rides high in the water, and fits in a gunwale rod holder. It features internal rattles to attract fish and has a wide loop that makes for easy retrieval by hand or with a gaff or boat hook. The marker sells for $19.95. Mark's Markers, Fort Lauderdale, FL; (800) 515-0381; www.marksmarkers.com.