The Zebra F-701 can be refilled with a Fisher cartridge to create the perfect all weather log book pen for on the water use. Completing the cartridge swap requires removing the plastic tip insert with a paper clip which allows the Fisher cartridge to drop in without any further modifications. The barrel knurling can be coated or taped to prevent pocket chafe.
https://www.youtube.com/watch?v=zlgbRxZaAqY
