Title: fishing boat designs: 2. v-bottom boats of planked and plywood construction (rev.2) author: gulbrandsen, 0. created date: 1/31/2006 2:59:43 pm. 4.6 – design a boat challenge. objectives: design a boat that will float the most. mass without sinking. materials: • rolls of aluminum foil. 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.