SHRS has been developed by radio sailors who also have considerable current experience in various dinghy classes either as competitors or officials. The resulting system follows very closely the format used by such classes as the 29ers, 49ers, Laser, Optimist and others. The main difference is that as those classes use different courses for the different heats they only change at the end of the day. As radio sailing use only the one course the heat movement can occur after every race giving an even greater mix.
An event run under SHRS is divided into 2 sections (called Series) the Qualifying Series and the Finals Series. During the Qualifying Series boats move between heats based upon their finishing position in the previous race. At the end of the Qualifying Series boats are then placed into the Finals Series fleets in accordance with their overall place at the point of transition and from then on there is no movement between heats - all Gold Fleet boats stay in Gold etc.
The transition point to the Finals Series will be specified in advance either as a certain number of races or a point of time. Should weather conditions preclude reaching that point the event results will be taken at the last race of the Qualifying Series for which all heats were completed. However, once the Finals Series is underway there is no need to have all Fleets sail the same number of races or to keep to a single sequence.