How about using Taipan 4.9 or Bimare Javelin 16s for the trainer? Both these boats can be ordered with or without spinnaker, so spinnakers could be added later. Both these boats are lighter than the either of these Hobies being discussed, thus are easier for young crews to handle. Most importantly these boats more closely emulate the latest trend in modern cats and therefore most likely future Olympic catamarans.

We are talking about a trainer for our youth, correct?