A recreational board propelled by side-to-side movement of a user. The board may be wider than deep, to accommodate a human standing at a slight straddle, and have a plurality of caster wheels mounted to an underside thereof. The wheels are preferably mounted in a biased direction wheel arrangement, the bias being provided by tilting, spring or other mechanism. The orientation of the front wheels may be different from that of the rear wheels. Four, six and eight wheel embodiments are disclosed.