I'm using a 5th Line Safety on my Caution Spitfire 16m.

It is setup in a similar manner to the Wipika CLS system.

I'm attaching the 5th line to the (rather strong) pump leash attachment point, and passing through a ring on my adjuster strap.

I use a Naish SSS spreader bar to connect to the leash, and with a Ronstan swivel on the chicken loop the system spins 100% freely.

You do have to unwind 5 lines instead of 4 when you setup. If you can't unwind 5 lines within a minute or two your doing something wrong, practice until your can (biggest tip I can give is spend the time to wind them up neatly...) Regardless I've had no problems with an extra line to deal with.

I still need to tweak the line lengths. I'm very close to spot on but I need to take about 1 foot of slack out of my leash section. Wipika et al ship their off the shelf setup with very exact line lenghts, and figuring these outs is the tricky part.

I know the Caution guys are playing with 5th line configurations and I expect them to release a similar system very soon.

You should be able to use the same bar and line set on multiple (different sized) kites by using a (long) pigtail from the centre attachment point.

Have a look here:
http://kytesurfa.com/modules.php?set_albumName=caution&id=P5240008&op=modload&name=gallery&file=index&include=view_photo.php

The system is FANTASTIC. I very happy with it.

Depower/leash is AMAZING. Pull the centre line about one foot by hand and it kills 90% of the power in the kite. Throw the bar and the kite just drops out of the sky onto its back. Relaunch is awesome. Just pull in about a metre on the centre line and the kite flips onto its back, no more swimming to make the kite roll over. Water launching from a crashed position is double amazing... imagine being able to reach out with your hand and pull the kite from the centre point... you know when the kite is collapsed on its side and usually just flips upside down... a small tug and it literally pops into the air.

The big danger/problem... if the kite flips inside out it wraps itself up in the centre line. Fortunately, the extra line actually makes this a LOT harder to do.

Oh another HUGE bonus... when you dump the kite to safety... the bar slides about 2-3 metres away from you and the lines DO NOT TANGLE. Throwing the bar and recovering the bar is trivial... no more praying that the lines dont become a tangled mess when you get the bar back.

I DONT use this for self launch (like the wipika advertising etc suggests) ... I *hate* self launch of lei's... it sucks... if you must self launch get an arc (or maybe flysurfer?), its a million times safer.

Note this isn't the same as the 5th Element setup, which slides through a ring much closer to the kite and acts as a semi-bridle. Personally I think the 5E is overkill, (its not three lines, its still four-two in the centre) and would be a pain in the ass to retrofit yourself (of course those of you with North gear can buy the 5E bar/lineset for about 350 euro :)

I plan to add a sliding ring oh-sh!t handle on one of the rear lines to allow an extra option to release to/with.

If anyone wants to check it out just let me know. :)

www.kytesurfa.com
Caution Redline 132
Caution Spitfire 16m
Airush Lift Pro 11.5m (for sale)

JAN THAT SEEMS SIMILAR TO WHAT I WAS GONNA SET UP BAR A FEW THINGS.
FIRSTLY I DONT LIKE THE IDEA OF UR SPINNA ON THE SPREADER BAR. I JUST DONT SEE IT WORKIN THAT WELL, AND ALSO HOW DO U HANDLE PASS?

MY IDEA IS TO CONTINUE THE LINE FROM THE RING DOWN N THRU THE CHIKEN LOOP HOLE THEN ATTACH TO THE BACK OF UR HARNESS. THEN U HAVE ABSOLUTELY NO PROBLEMS CEPT ONE I HAVE THOUGHT OF. THAT BEING U NEED TO DESIGN THE BAR SO THAT WHEN U UNHOOK N THE LOOP IS AGAINST THE BAR N HOLE U NEED THE 5TH LINE TO STILL BE ABLE TO SLIDE THRU NOT JAM AGAINST THE C/L AND BAR.

I NOTICE U USED ROPE FOR THE 5TH LINE. I WAS THINKIN OF JUST USIN A KITE LINE. ANY THORTS?
ANY THORTS OF THIS DESIGN? THAT IS SORT OF INCORPORATING A MIXTURE OF WIPIKA AND NORTH.

BUT IF U CONNECT UR LEASH TO THE BACK OF UR HANESS THEN U CANT UNSPIN THEN CAN U.
IF THE LEASH WENT THRU THE CHIKEN HOLE THEN U CAN SPIN.
I SEE UR POINT ABOUT WEARING AND I HAVE SEEN HOW MANY CHIKEN SKINS U AND MARCELL HAVE BEEN THRU IN THE LAST FEW YEARS AT PELI POINT, BUT (TOUCH WOOD) I HAVE NEAVER WORN CLOSE TO THRU ONE.
THE HOLE ON THE CAUTION BARS ARE BIG AND I HAVE A NAISH QUICK RELEASE CHIK N THE ROPE IS WAXY. IF IT IS A THIN KITE LINE IT WOULDNT GET IN THE WAY I AM SURE COS THE PRESSURE AND WEAR OF THE CKIKEN ROPE WOULD BE ON THE FRONT OF THE LINE (CLOSEST TO U) I BELIEVE. THE BACK IS OPEN.
GUESS I JUST NEED TO TEST N SEE IF MY THEORY WORKS.
ALSO, DO U HAVE THE LINE LENGTH OF THE 5TH SO IT IS TIGHT OR SLIGHTLY LOOSE.

OK LAST QUESTION
U SED THE BAR STOPPS A FEW METRES FROM U.
SO DO U HAVE A STOPPER UP THE LINE SOMEWHERE? HOW FAR IS THIS STOPPER?
HOW MUCH DO U NEED TO DEPOWER THE KITE?