A portable mooring device for a small watercraft includes frame means having a pair of opposing side members and a plurality of crossbar members that are assemblable and adjustable by releasably securing telescopic engagements therebetween with removable pins, watercraft-seating means having shoe and support elements that are assemblable and adjustable by releasably securing telescopic engagements therebetween and the watercraft-seating means to the frame means with removable pins, and securing means having a tongue mechanism with a winch wherein the securing means is assemblable and adjustable by releasably securing telescopic engagements thereof and by releasably securing the securing means to the frame means with removable pins. The portable mooring device is easily disassemblable by simply removing all of the removable pins. A method of mooring a small watercraft is also disclosed.