Abstract: A collapsible cover system and kit therefore are removably mounted to a plurality of spaced stake sockets secured within longitudinally extending areas on opposite sides of a swimming pool or hot tub. Stakes, disposed in the stake sockets, are slidingly connected to two lengths of spaced guide tracks that extend along the sides of the pool or hot tub. Inverted bow-shaped members having free ends are removably secured to carrier means that slidingly connect the bow-shaped members to the guide.In additional embodiments the spaced guide tracks are deposed either in a trough that may be covered when the particular rail sections are not in use, or hingedly deposed adjacent a trough into which rail particular rail sections may be stored when they are not in use.