THE CACHE IS NOT AT THE POSTED COORDINATES
(although it might be a nice place to visit)
You are going to have to do a little fishing to earn this catch of the day. This is a two part (or, is it a three part?) puzzle. In order to solve part two, you must first solve part one and, so on... Sound a little fishy? Well, Go Fish. Enter your answer from part two into Certitude for the final coordinates and a hint. Good luck and, Happy fishing!
N wzdy’d yvnt zd 3 svpfzuvfvcd oepx. Zfd fnzo zd fyv dnuv ovpxfy nd fyv yvnt aohd ynow fyv qetl. Fyv qetl zd nd oepx nd fyv yvnt npt fnzo fexvfyvc. Yej oepx zd fyv wzdy?
You can validate your puzzle solution with
certitude.
Digits followed by unit of measurement (no space in between)
All of the necessary equipment needed for your sport fishing expedition has been provided at the final location. Please replace everything just as found. Good luck and, Happy fishing! 
Good luck & Happy caching!