I have an older CDI model on my ODay and hate it. The biggest day to day gripe is that the thing rolls unevenly since the foils are not round. Feeding the tape into the slot and hoisting is a constant process of feeding it in then backing slightly before feeding more. When tensioned the top and bottom attachments are not close to the slot so the sail tears at the tape if some dyneema isn't used to tie the grommet to the foil.