A boat is an expensive luxury item, and should be protected with a properly fitted boat cover. Because of the types of material that boats are furnished with, they need to be protected from the harmful UV rays of the sun. Gel coat, carpet and vinyl can become brittle and fade if left exposed to the sun for an extended period of time.
In the event that you will want to upgrade or buy another boat, you are most likely considering selling your old one. It is easy to spot a boat that was cared for as opposed to a boat that was neglected and allowed to stay in the sun. Debris like falling branches from your backyard can easily puncture the upholstery. Bugs tend to find their way into to boats, especially if left a little damp after a day at the lake. Bugs can be very hard to clean out and again and quickly decrease the value of your investment.
Most boats today are equipped with nice sound systems and DVD players. If these are just left out in the open, not only can these items be ruined by direct sunlight, but they can be stolen. On the other hand if the interior of a boat is out of sight, then there is a very low chance that anyone is going to be thinking of taking...