Red sky at night is a sailor’s delight, but red sky at morning means the ship's been steered inside a volcano. Discover further aquaformation with today’s Groupon: for $149, you get a four-hour rental of any boat 21 feet and shorter at Carefree Boat Club (a $499 value), with locations in Hampton, Williamsburg, and Virginia Beach. Customers must put down a $1,000 refundable deposit.

Carefree Boat Club loads groups of up to eight explorers on an eager watercraft for a half day of cruising on the ocean waves. After arriving an hour early and completing a 45-minute training session, captains pocket four-hour boating and fishing licenses, select a seaworthy vessel—such as a Sea Ray 182 bowrider or a Triumph fishing boat—and putter across scenic waterscapes from 9 a.m. to 1 p.m. or from 2 p.m. to 6 p.m. Fishermen can hook flounder and striped bass at the Hampton Roads Bridge Tunnel while water-sports enthusiasts skim past landlubbers on water-skis or develop death grips as they tube within range of historic Williamsburg. After a morning or afternoon of sea skimming and arguing over who should call whom Ishmael, boaters can take shore leave at the various local beaches for a snack or a nap in the sun. Renters are responsible for picking up fuel costs, which can fluctuate daily; water sporters should bring their own equipment, as skis, tubes, and inflatable cabana bars are not available at the club.