I have been riding a Bob Brown tandem with a DaVinci Independent Coasting system as a newbie to tandem riding. It has been great. My 10 and 12 year old stokers have taken to it easily. They automatically end up in phase without any conscious effort. We haven't practiced out of phase - that is likely more difficult. It makes starting very easy. Also, it provides a huge range of gears with 4 chain rings on the front and 10 on the back!