We have a 2 year old 2 and 2 main (2 full and 2 partial battens) attached to the mast
via standard "D" sail slides. Most slides (except at the head) are the white nylon Bainbridge type sewn in to Spectra webbing to the tack of the sail.
The slides worked well till 8 broke, clean shear in about 25 knots. The larger ones (black) that are at the base of the top battens also broke - no crash jibes! I replaced them with some old spares, similar to the previous for now.
I would like to know of a more robust, oversized type of slide that is offshore
reliable. I know that PTFE coated metal slides (we have 2 at the headboard) are around but do not know the longevity of the coating itself .
Does anyone have experience with slides (not on an external track) that hold up well over years in an offshore environment