A trailer or truck bed cargo retaining and pocket protector device for flatbed trailers, industrial trucks, and conestoga-style trucks is disclosed. The method may include the steps of placing the pouch on a support, placing a first cartridge half over the pouch and the support, placing the pouch and the first cartridge half on a second cartridge half to form the cartridge, maneuvering the cartridge to a filling unit, and filling the pouch within the cartridge. The ratio of moles borohydride is from 0 to 7.