In Mac OS X drag-and-drop is convenient even with small screen sizes because of "spring-loaded" folders and Dock icons, so you don't need a special arrangement

In Mac OS X drag-and-drop is convenient even with small screen sizes because of "spring-loaded" folders and Dock icons, so you don't need a special arrangement of windows. I often use it by dragging an item into a Dock icon, pressing Space (or waiting a second), and then dragging on the window once it opens.