My friends Auz Flyer uses this system to good effect. However , It could cause hassle with our spi halyard and sheets and I'm not convinced my tramp would take the strain as their mains are over 2m smaller than ours. If anybody suffers from back problems this would certainly stop the twisting effect of our rear sheeting, and if someone does convert or is already using this system then I'm sure we would be interested in the results.