At least one exemplary system comprises a tubular mesh enclosure formed from a mesh material having a nominal opening size of less than 0.5 inches, the tubular mesh enclosure having an opposing pair of ends, at least one of the opposing pair of ends sealed; and a filling surrounded by the tubular mesh enclosure; the system defining a length and a generally non-circular longitudinal cross-section defining a major width, a ratio of the length to the major width greater than approximately 40.