What is a puddle duck racer. the pdracer is a developmental one design racing sailboat that is basically a plywood box with a curved bottom and is the easiest boat in. Why we don’t have required plans the required hull shape. with almost every other sailboat class, the way it works is you buy a set of plans that the class sells, and.  8′ puddle duck racer one design racing sailboat based on bolger brick. developmental class, defined hull, unlimited sail rig and underwater fins..