A seat is glued to the bottom of the boat with contact cement. The kit seat is first assembled by first gluing together the two pieces of 1” minicell. You can make your own seat by carving 3” minicell. The backrest is screwed into the coaming riser from underneath. Drill a small pilot hole up into the riser lamination about 1/4” back from the interior edge of the cockpit. Screw the webbing in on either side at approximately the widest part of the coaming. The backrest is held up with the shock cord at the back of the coaming. Use the plastic loop to hold the shockcord. Tie the shock cord to make a loop going through the nylon loops on the back of the backrest.