Against good advice I have decided to proceed with the installation of the retractable skeg / rudder system. The main concern with this device is that a small mechanism that engages with the foil to operate it as a rudder has been known to fail in previous instances of its use. Lawrie has had to contend with some other design deficiencies in the system's housing box and flanges but I'm pleased to see from the image above that these hurdles have been overcome. Thanks Lawrie!