I really like Wailord and i have one at 2200 CP. But sadly, it doesn’t perform too well in PvP for now.
When it was released, the game had only PvE and its set is really good on PvE and gyms. But when PvP came out, water gun was turned into an awful move.
I’m able to use it in Ultra league premier cup with the right teammates, but i hate the fact that it struggles to charge due to the useless water gun fast move. Its set is really good except for the fast moves, that are trash in PvE.
Water Gun is not only slow to charge energy, but also doesn’t do a great AA-fast move damage like heavy fast moves (confusion, waterfall, razor leaf etc.), so it’s totally underwhelming as fast move. Also, Wailord doesn’t have the bulkness to do heavy AAs (like a Vaporeon or a Gyarados for example can) because despite its awesome stamina-HP stat it sports a really trash DEF that makes it frail like a Crobat. So. it’s more an offensive-like pokemon than a tanky one, like in the main games it is often used with Water Spout for the same reason.
I really think it needs a community day with a new better fast move to make it more useful and a bit more viable on PvP. Other pkmns with 400 candies evolution had community days and new moves and they are all strong in PvP, and the next one will be Swablu. Also, other pkmns high HP-low def like Wigglytuff (which in normal games is weaker than wailord) are good in PoGo, so i really hope Wailord will have a place. What do you think?