To see a sled in your dream represents your youthful and innocent side.
To dream that you are sledding symbolizes your playful characteristics and implies that you have a very liberal outlook.
To dream of a sledgehammer implies that you have built a barrier between yourself and others. You should remove this barricade and reveal your feelings and emotions.
To dream that you or somebody else is on a slide represents an issue or aspect that is not firm or committed. Perhaps you have no control over an issue or circumstance in your life.