Im yet to be convinced on the 2 line system. I cant deal with the fact that guys go across the clearing reach with the tack pulled out flapping like a seagull that got the last chip. Not fast i reckon. Having said that when im crewing i dont mind 2 lines at at all.

My crew refused to use anything but the 1 line system. For a relatively small kite on the f16 i think 1 line with the halyard exactly the right length makes sense. The set is just as quick if not quicker i think. The one line set up on the viper has little that could faulted.