That question is a little too easy to answer, so I will change tacks a bit and discuss an area of the boat that is not always waterproof: the cockpit. On most boats, the cockpit is completely open: if it rains, you get wet; if it is windy, you lose your hat. Ocean-going boats tend to have dodgers (removable windshields of sorts) to keep the spray out of the cockpit and canvas biminis (collapsible tops) to provide protection from sun and rain. Here is an example of a typical dodger-and-bimini setup:
Sea Gem's cockpit protection is much more robust. We have a fixed, plexiglass windshield/dodger, and a fixed, fiberglass top/bimini:
As a result, on a rainy day (like today), we can still sit "outside" in the cockpit and remain comfortable and dry:
When it is nice outside, the panels roll up and out of the way to allow for ventilation:
To be sure, attaching or rolling the panels takes a little more time than opening or closing a window, but they certainly help make Sea Gem comfortable in all conditions.