Edson’s new Sportsman Series PowerKnob ($44.95) attaches to any standard steering wheel with a rim diameter of 5/8″ to 1 1/4″ to make boat maneuvering faster and easier. The PowerKnob features twin races of fast-action Delrin ball bearings for smooth operation and a comfortable, ergonomic shape. Everything you need for installation is included, and the unit comes with a 1-year warranty. Edson International, New Bedford, MA; (508) 995-9711; www.edsonmarine.com.