Flat bottom scow-type boat fishermen who like to work the shallow backwaters and weed patches on lakes and rivers will find this flat-bot-tom scow-type boat an ideal. Free boat plans, boat plan resources, and free cad boat drawing file downloads. *all images may include upgraded options* 20’4″x66″ sled starting at $29,995.00! including 115 evinrude e-tec pump and tille. our 20′ 4″ flat bottom sled is.