For $40, today's side deal gets you $100 worth of eco-amorous, bow-to-stern boat-washing services from Boat Bathers. The squad of uniformed, insured professionals can scrub down big, buoyant friends while docked or afloat, so long as they're beached or moored in the Chicago area (a 30-mile radius). This family-owned, native Chicago business charges $2 per foot for a docked boat and $3 per foot for a floater, which means this deal could cover a complete washing for the average 35-foot boat.

Like the U.S. Navy, Boat Bathers uses the biodegradable and certified-organic Latitude 43 boat soap to spick-and-span every hard-to-reach and ticklish spot on your boat's hull—including the windows. Boat Bathers claims to be the only area business that sports the nifty water-pump technology necessary to wash floating boats.

Call ahead to schedule your appointment.