Physical Sweeper Kingdra:
Kingdra @ Leftovers/Lum Berry/Damp Rock
Adamant
Swift Swim
252 Att/128 Def/128 SpDef
-Rain Dance
-Waterfall
-Outrage
-Return
I don't like Special Sweeper Kingdras, you set up Rain Dance and then get walled by Blissey or Chansey. So I decided to make a Physical variant.
Once you set up Rain Dance, not much can outspeed Kingdra. Not much can survive a Rain-boosted Waterfall from Kingdra. Outrage for a bit more coverage. I've never really found a use for Return. Sadly, Kingdra's physical-movepool is awful so I had a hard time trying to pick a 4th move for Kingdra.
I chose 252 Att EVs to boost Kingra's power, making him unstoppable (except for things that resist Waterfall). I chose to split the Defenses because you MUST take a turn to setup Rain Dance, and you don't want to have to take a hard-hit in the process. But once you setup Rain Dance, anything that can survive a Waterfall, usually isn't powerful enough to do much to Kingdra.
I usually use Leftovers because while I'm setting up Rain Dance, I will take damage, but when the Rain stops, I will have a good amount of HP back so I can set it up again with no worries of getting KO'd. Damp Rock can be used to extend Rain Dance's time to 8 turns. Lum Berry can be useful when using Outrage.
This thing also counters Sun teams. They lead with Ninetails, I lead with Kingdra. Solarbeam only does ~30% HP, giving me the opportunity to Rain Dance. Waterfall 1hkos, no more Ninetails, no more Sun.
I find the only weakness of this set is Outrage+the 4th moveslot. When using Outrage, you get trapped in it and you get confused, giving the opponent the perfect chance to setup on Kingdra.
I've been using this set a lot lately, and it's really good. If I weren't such a bad team designer, I might be able to make an awesome team based around this guy.