A sled with tubular runners that have a square aft cross section from which fixable bayonet couplings having three sides of a square extend and can receive a pole support frame's side members which cover the bayonet extensions. The pole support frame supports opposed bearings that rotationally mount a pole axle from which an equipment support pole transversely extends. Two semi-circumferential arrays of holes interact with holes in a fixed angular adjuster, mounted to the pole support frame, to enable multiple discrete fixed angular positions for the pole. The sled can support weights, preferably in the form of containers of water, as well as exercise equipment. The pole can support pole extensions, exercise equipment, and pulleys for guiding cables that connect weight containers to exercise apparatus.