An inline hay trailer bracing device, system and method for rear-loading procedures. An inline hay trailer bracing system includes a bracing device configured to moveably attach to a chassis of a trailer bed, the bracing device including a pair of elongate legs, each leg including a first end having an opening configured to couple to a pin extending therethrough such that the leg pivots around the pin, a foot opposite the first end, the foot including a beveled edge, and a pad above the beveled edge, wherein each leg is pivotable around its respective pin between: a travel position, wherein the foot is raised substantially parallel to the chassis, and a loading position, wherein the beveled edge is configured to engage into a ground, and wherein in the loading position the bracing device is configured to brace the inline trailer bed during rear-loading procedures.