A recreational assembly includes a body, the body defining an aperture extending through the thickness of the body from the upper surface to the lower surface, and two lumens extending within the body. The assembly also includes two or more stringers removably insertable into the lumens, respectively, and a plug removably insertable into the aperture of the body. The plug includes upper and lower plates configured to be secured within the aperture. Each of the upper and lower plates includes an anchor on one side configured to connect with an end of one of the stringers.