A man wearing a blue apron and long rubber boots is dragging a flotation device from a long row of flotation devices.
A man in rubber boots and a work apron is rubbing his face in between pulling floating objects.
Both sentences express a man, wearing an apron and boots, pulling a floating object.
Someone who is dragging flotation devices could also be said to be pulling a floating object.
If he is dragging the objects, he is pulling them.