how does the kite perform if you pull the 5th in so much?
If you are asking about the "dynamic 5th line system", the answer is: "Better than it has ever performed before!!"....huge wind range like a bow, and instant depower to the point of falling out of the sky....when the 5th line is adjusted right, the back lines do not go really slack when you push the bar out for depower, so you can control the kite.
It appears that the "magic formula" for the 5th line to work really well is the 2:1 length ratio of the 5th line to the power line.
This system is nothing new in the history of kiting as Dr Lightwind explained a couple of years ago (he called it Dynamic Pitch Control). I can post the topic is anyone is interested.
Others (Dr LIghtwind, Live2kite, nbbowers, etc.) have talked about this system in the past, and I have trouble understanding why it did not catch on big time. I have only found 2 potential problems with the use of the system, neither of which would prevent myself or other experienced kiters from using it. These are:
(1) Line wear necessitating replacement of one meter long segments of the 5th line and the power line at a possible cost of $10. ....maybe every 50 hours of use.
(2) The fact that the bar does not go flying out to maximum depower when the bar is released. I, along with anyone else that wants to be able to spin the bar, consider this a positive feature of the system, but the fact remains that to place the bar in the full depower position, the kiter must "gently" push the bar out...no real effort is needed to do this ....just a little stickness of the bar on the lines.
The system is probably not indicated for beginners with less than 50 hours of experience, or for those who can not "think on their feet". Of course Kiteboarding in general is probably not the best activity for those who can not think on their feet.
More on the system later......