Ultimate Sole is for down below and it works fantastic. They now have a UV stabilized version for exterior use:
"Ultimate Brightwork is our new exterior version of our High Gloss Finish. Formulated with minimal UV protection, it is intended for use in pilot houses or entrance ways that receive some sun. In direct sunlight exposure, do plan on re-coating at least once a season. The characteristics of this finish are intended to mimic the performance of the Ultimate Sole as far as footing and coloring. It will flow easily and you can easily do two coats in one day without sanding between coats. As clear in color and scale as our Ultimate Sole finish. Ships in an "F-Style" quart can with twist off top. Pour what you need in a paint pot and re-seal the can for longer shelf life."
Epiphanes is gonna be real slippery on a cockpit floor. I'd go with the UV ultimate and plan on re-doing it annually. Exactly what kind of cockpit sole do you have? Is it a teak grid or traditional planking. If a teak grid...I would also consider using 2 coats of Cetol + multiple coats of Cetol gloss as it will last longer and be easier to touch up than the Ultimate or Epiphanes.