For a boat blind, kayak cover, shore blind, or pit lid, you'll need to build a frame first. I wrapped my boat in cut panels of polypropylene fencing ($20 for 100 feet at Home Depot). If you're making a box blind or pit cover, simply build a frame from 2x2s, then mold the fencing around it, securing with staples. The tight 1-inch poly squares let you attach the grass anywhere, and a stiff wind won't turn your blind into a sail, as can happen with burlap. To cover a layout blind, tie the grass to the built-in straps as described at right. For a gillie suit, cut slits in your old hunting clothes for the knots or zip-ties.