Is Japanese Glide Tape available at Annapolis Performance Sailing (APS) - Japanese Glide Tape, 3/4" x 26'
I put some one my main hatch
about 10 years ago. It was fiberglass
sliding on fiberglass
and had created a nice groove. . The original tape is still there and the hatch still slides easily.
Super slick tape - amoung the use by small boat racers is to keep the centerboard
easy to raise and lower even with side loading.
All the usual disclamers - no affiliation with apsltd or the product, just glad I found it.