Shiny 3 has just been found, and my first ever CF shiny!
As an owner of merely an Old Rod, I chose to hunt the two Pokémon who can be found- Luvdisc and Magikarp- as practice. Tonight, that goal has come to pass! Twenty minutes of fishing later, with my Suction Cups Inkay in hand and my Paraflincher Granbull, Fang, ready as backup, I have caught a shiny Magikarp! Sure, I could import my SS Gyarados, but it doesn't have the same satisfaction of catching and using her.
The Magikarp is female, with a Jolly nature- not the best, but I can always re-hunt Vitticepa after the game is complete. Besides, Gyarados can work as a physical attacker, if I recall, and Vitticepa's current role is merely for ingame at her current status.