Sneak box. our sneak box is an updated and improved rendition of the barnegat bay sneak box. the most important difference in our version is the inexpensive materials. Complete plans include full size patterns for the side planking, bowpiece, transom, frames, tiller, rudder, skeg, daggerboard trunk, knees, and motor brackets. Links to boat plans some free boat plans, boat building information including plywood stitch and glue. full range of boat plans from sophisticated yachts to plywood.