Disclosed are hay bale spikes for tractors used to carry hay bales. A hay bale carrying system includes a frame attachable to a tractor. The frame includes a first spike rigidly connected and a second spike movably attached parallel to the first spike, where the second spike is movable to a position that is not parallel to the first spike. An opening in the frame may position a pin to matingly accept the second spike that includes a lever arm on the opposite side of the pin from the spike. The lever arm may include a connector near its end connectable to a hydraulic cylinder such that expansion and contraction of the hydraulic cylinder provides leverage through the pin to the second spike to move the second spike from a first parallel position relative to the first spike to a second non-parallel position.