A multi-position user-support device for a stand-up paddle board includes a base configured to mount on a stand-up paddle board, and a support post with a pad connected thereto to support a user's weight while leaning or sitting thereon. The support post is rotatably mounted to the base, with a spring component configured to maintain a return force on the support post when rotated toward a rear of the stand-up paddle board in a stored position. A spring-activated latch retains the post in the stored position until released by the paddler. The post may include a telescopic portion to adjust its length. The device may also include a seat attachment.