Plyak - By Steve Ellingson. In all countries of the world, particularly the United States, the kayak is enjoying newfound popularity. Here's a nimble, lightweight craft that has its roots in the Arctic as a basic instrument of survirval, yet is branching out as a modern outdoor sport on our own rivers and lakes. To the Eskimo, a kayak is more than a boat. When he's laced into his whale bone and Walrus hide craft, he's ready for anything in the way of water or weather. To most of us, however, a kayak is pure adventure and fun. It's perfect for poking around uninhabited islands, exploring the bends of a lazy, winding river, or just breaking the peaceful surface of a placid lake at sunset. Readily available plywood is used for construction of this kayak, rather than the Eskimo's whale bone and walrus hide.