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. Footy class r/c sailboat razor 3. bill hagerup updates his razor design with the razor3. here’s how he compares the two:.  8′ puddle duck racer one design racing sailboat based on bolger brick. developmental class, defined hull, unlimited sail rig and underwater fins..