Designed specifically for planing dinghies and inflatables, the PowerThruster IV leverages the technology used on tug boats to maximize propulsion, and incorporates lifting foils to help get your boat to a plane. The forward end of the foil is 1/4" higher than the aft end, offering a great amount of lift without sacrificing speed. Like the PowerThruster for sailboat outboards, the PowerThruster IV will increase your acceleration by as much as 22% while saving at least 30% on fuel! Plus, you will experience easier powering against strong currents and more control when backing up. In a recent test sponsored by the product designer, PowerThruster performance was compared to that of the leading bolt-on performance accessory, Doel-fin. Outboard: 20hp Honda Prop size: 9.5 inches Boat: Caribe C-12 inflatable Conditions: 6-12 kt winds, moderate chop We are so confident in this product it comes with a 100% satisfaction guarantee. It is simple to install and comes with clear installation instructions. Holes are pre-drilled and allow for any necessary adjustments after installation. Made of stainless steel and manufactured by Garhauer Marine, you can be assured of top quality and long life. That assurance is supported with a 10 year warranty. There is a Power Thruster specifically for sailboat outboards too. Click here to view it.