I have to go up against Wattson, his fearsome Magneton, and his terrifying Something Potion! How can I possibly win!?
I keep saying: Use Magikarp(or catch a Geodude on route 111)!
You don't have any water-type moves for Flannery, and Gyarados is just so useful in a Nuzlocke.
Now might be a good time to start training Scary Fish, since I no longer have a massive Electric-type threat looming over my forehead. Of course, there's also Bluebottle the Tentacool to consider; I think it naturally learns Bubble Beam before too long.