I was thinking about Pokémon quite a lot today, and amidst my thoughts, I believe I have discovered one move within Dragonite's movepool which I think is extremely underrated and highly overlooked, though for understandable reasons: Aqua Jet. When I first found out that Dragonite learned this move, I initially dismissed it as being worthless, for the exact same reason why many people may have done the same: because Extremespeed is twice as powerful, meaning that a neutral hit from that move would be just as powerful as a super-effective hit from Aqua Jet, while a not-very-effective Extremespeed would be the same power as a neutral Aqua Jet. This seems intuitive on the surface, however taking a closer look at the most commonly used Pokémon in the battling environment, I have come to see that this is actually a very viable move over Extremespeed, for two main reasons, the first being that Aqua Jet deals twice as much damage to Doryuuzu, giving Dragonite a chance to revenge-kill one of the fastest Pokémon ever in a Sandstorm and one of the most threatening Pokémon in the current battling environment. The second reason is because Aqua Jet can deal quite a lot of damage to Shandera, or even take it out if it is weakened, while Extremespeed cannot hit it at all. Being able to hit these two Pokémon more effectively than Extremespeed, of course, comes with the price of dealing only half as much damage as that move against every Pokémon which Aqua Jet hits for neutral damage, with the exception of Steel-type Pokémon, in which case the two moves deal the exact same amount of damage. However, looking at the most common Pokémon which priority moves would normally be used against, this may not be too bad, as many Pokémon which Dragonite would normally use such moves against, such as Blaziken, Infernape, Randorosu, Choice Scarf Heatran and Urugamosu are all hit just as hard by Aqua Jet as by Extremespeed anyway, meaning that this move is definitely worth considering, despite how it may seem compared to Extremespeed on paper. And of course, Aqua Jet has four times the PP of Extremespeed, and also becomes almost as strong as that move under the rain (a weather condition in which Dragonite is extremely useful due to its wide range of moves which work effectively under that weather, meaning that Dragonite is a prime choice in rain teams, giving even more reason to use Aqua Jet), and that's two more advantages Aqua Jet has over Extremespeed. This is not to say that Aqua Jet is better than Extremespeed on Dragonite though, but after some thought and analysis, I believe it is definitely a viable option, despite what I initially believed.