Install the Coir Matting while in the trench. Put at least 12 inches with the roll above the trench (further up the slope). Space each staple about a foot aside inside the trench Coir Fiber Matting can be used on ski slopes, and being a bottom reinforcing substance in watercourses. https://jaredkjdxp.spintheblog.com/39138986/5-tips-about-coir-matting-you-can-use-today