Hi guys,
l fly a pair of '09 Rebels & have just started to land back rolls and have found that after a long session doing back rolls l end up with extremly tight twists in the centrelines to the point that the 5th line is completly usless. Quite apart from the obvious danger of the kite not depowering if l have to hit the QR theres the annoyance factor of having to spend the time untwisting the lines before l can head out again. Would fitting a swivel to the centre line solve the problem & where on the lines would you fit it? And just so l dont get a whole bunch of people saying "front rolls will untwist the lines" l'll do that as soon as l can do front rolls.
"front rolls will untwist the lines" - oh wait... 
It sounds like you are doing your back rolls all on the same tack.
To fix that either do front rolls on the same tack or back rolls on the opposite tack.
before i could front roll i would loop the kite on which ever transition undid it. not really loop, just down turn or what ever its called. makes for nice fast carving transitions. (pop to toe side and pull hard on your front hand so that the kite turns downwards and then under and then powers through the window as you go down wind then back the other way)
I think the new 2010 bars allow you to untwist the lines while you are riding. You may be able to buy the new Iron heart and attach it to your 2009 bar?
do not get stuck in a rut, learn to do back rolls on the opposite tack. if you continue doing backrolls one way only you will get frustrated when you have to start learning them all over again going the other way and will probably not bother. This sucks when you progress more and more and you can only do tricks going on way.
It is hard to motivate yourself but I strongly suggest learning a new trick on both tacks as soon as you can.
Inspiration to learn front rolls asap?
... but as the others have said, you need to learn to backroll in both directions otherwise you'll end up with one massive leg and one underdeveloped one. 
Good advice all, but l need to learn to jump of my right leg before l can backroll in both directions. As far as the down loop transitions go l've had a go at then a few times but is another thing l'll need to work on although l dont think thats going to fix the twist problem as each transition will only fix one twist. But its a good excuse to start trying front rolls.
Definately learn to backroll in the other direction. you should always try to nail a trice in both directions from the get-go.
^^^^ what they all said.
You can also just loop the kite as you ride along. It's kind of fun and good practice for when you start doing kite loops or big downwinders.
Just head a bit downwind and pull firmly on your backhand.
Obviously, down the track, tricks on both tacs are the way to go. In the meantime, try twisting your centre/front lines in the opposite direction when setting up on the beach, this will give you a bit of a head start as you'll be able to do a few backrolls before your lines are become straight. Imagine my line twists when only able to do a back roll one direction and a front roll the opposite direction!
I had the same issue, at first I would just go into the beach and turn around the opposite direction until the twists were out (with kite at 12)
Soon I learned to downloop while turning (you will find this is from the tack you cant backroll on to the tack you can) to undo the lines
Now, I backroll both ways, sometimes I don't even unspin the bar between them (when just practising rolls both directions)
Good luck, its always fun though.
Not intending to hijack the thread but once you start doing rotations line wear becomes apparent.. im guessing maybe your get 400 or 500 rotations before you need to replace the lines
This question may have already been asked but i couldnt find anything relating to it
Can we prolong the life of the lines by applying some sort of lubricant??
What do kiters do or is replacement the usual option
There is some spray yachties use sailcote? which reduces the friction. I was wondering how sleeving the lower lines with a thin tube would work. Maybe the lines would slide within the tube?
Another alternative is to just cut and replace the worn areas of the lines using the good section of discarded twist worn lines.
