Its very simple to keep your stock chicken loop/quick release with these setups... you just need a large enough connection point that your stock CL will easily slip through it. Those who are modifying their bars/quick release systems in here are doing it for other reasons then just the slider set up. Dont let them scare you off - these sliders are GREAT in the waves!
I originally used a metal ring as pictured

Then switched to the largest sail thimble Westmarine had
http://www.westmarine.com/ronstan--stai ... 65_006_526
made the switch to the sail thimble because the wider and shallower angle of the metal on line transition allowed it to move smoother.
I also played around with plastic sleeves to help reduce line wear- this was version 1 - then switched over to more rubberized black fuel line I picked up at the hardware store

I just recently picked up a Ride Engine Harness with Coleman's carbon spreader bar - pretty stoked on the whole setup. Anyway he sends his spreader bars out with a shackle on them.

Used it for a session... but my CL barely fits through it so I just swapped it over to the Sail thimble I had been using... but for those who want the ability to self launch or land using the anchor method, or those who dont want to disengage and engage their CL/Quick Release ever time they "hook" in a snap shackle provides the means to do so... and technically allows for a double safety.
I will try and get some shots of the Engine harness up here soon... and remember K.I.S.S - KEEP IT SIMPLE STUPID! The simpler your setup, the easier it will be to see how it works/wears- and keep tabs on your slider lines as they will wear either from where the slider slides or wear the sleeve ends or the harness hooks in...
And to make sure its completely clear - I used my stock North Quad Bar's CL/Quick Release

Ill try and remember to get some shots of interface between the two up here as well
Cheers