You gotta remember that the NE6.0 Chute in question is a pretty big dude (340sq ft I think). I think the I20's sheet to the shroud as do most of the factory spinnaker boats. I have a ratchematic like yours on my rear beam and plan to install, like Chris, a ratchet block (that can manually be turned on and off) forward on my jib traveler track. My crew is confident that that should be plenty.