Install the Coir Matting during the trench. Position at the very least 12 inches on the roll higher than the trench (more up the slope). Place each staple a couple of foot aside In the trench BioD-Roll Coir Logs: Cylindrical structures stuffed with coir fibers, these logs stop wave action https://coir-door-mat59135.blogminds.com/not-known-factual-statements-about-coir-door-mats-31144551