A securement system includes a hook having a retaining clip, and an end cap that attaches to an end of a tubular structural member. The hook has a base with at least one channel having a lateral opening thereto. The clip is assembled with the hook such that the clip closes the lateral opening into the channel to define a longitudinal passageway through the hook. An elastic cord extends through the structural member, through the end cap and through the longitudinal passageway through the hook. A knot or some other stop is placed on the cord to prevent the end of the cord from moving through the passageway. The end cap includes V-shaped notches that receive and anchor the cord at desired positions to facilitate securement of cargo to the structural member.