(ignore my awful spelling) THIS POKEMON IS PUTTING ME OUT OF BUSINESS the only way to get it for dex is the route before spikemouth (9 i think) from either fishing or random encounters which one is the easiest/quickest? help much appreciated

So, from what I saw, the highest odds are at Challenge Beach in the Isle of Armor, at 10% from fishing, second highest are at the Frigid Sea in the Crown Tundra, 5% from fishing, but if you don't have the DLC, it seems the only way is visible encounters in the tall grass in Route 9, at a 1% chance. Also note that it doesn't appear in the northernmost part of the route, only in Circhester Bay and Outer Spikemuth. Fortunately, though, because it's visible, you don't have to encounter every Pokémon until you find it. You can just ride back and forth until it appears. And given its size, it should be pretty obvious when it appears.