Bodies of water are frequent metaphors in poetry due to their unfathomable depths, unknowable sprawl, and unattainable porpoises. Set sail into the enigma with today's Groupon: for $159, you get $350 worth of boat-rental services from Vacation Sports Rentals in Coeur d'Alene, Idaho. Customers are responsible for the cost of gas.

Vacation Sports Rentals' fleet of watercraft populates Lake Coeur d’Alene with nautical vessels including pontoons, speedboats, and sea-doos. Powered by beefy V6 ($300 for four hours in an SEI 186) or V8 ($328 for four hours in a Senza 186) engines, Larson speedboats cut across ponds filled with choppy water or chopped watercress with an included pair of skis or tube in tow. Wayfarers practice feats of languid derring-don’t aboard a placid pontoon boat ($300–$325 for four hours), or commandeer a sea-doo ($140–$350 for two–eight hours) for an up-close cruise around Lake Coeur d’Alene’s shores. Because water remains wet, the staff graciously doles out life vests, wetsuits, and naiad repellant at no extra charge with every rental.