Notice the fancy scalloping on the seat edges? That is because it was too hard for me to cut the seats to exactly match the sides. The seats are 16 inches wide - to accommodate a dog laying on it with you. The boat is symmetrical - the seats are placed the same distance from either end (centered 5ft from the end - I'll change that to 4' 6" in the next version.) Also note the inwale - that is my first ever inwale. I am quite proud of it.