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Best of Both Worlds! 1989 Shamrock Runabout 20 is Ready to Hit The Open Waters Powered by a Fuel Sipping 5 Liter 275 Horsepower Inboard Engine. She Burns only about 3 Gallons and Hour at Cruising Speed. She Handle Easily Even in Rough Seas. When Weather Gets Nasty there is a Good Size Cuddy with Porta Potti and Storage. Easily Towable on her 2011 Loadrite Trailer. Boat Weighs only 3100 Pounds so you do not need a Heavy Duty Truck.