The current team I'm using is a mix-up between two teams I have. The first one is just a general team while the idea of the second one is to utilize Sticky Web with other tactics such as Paralyze and Electro Ball, or use 'mons such as Blaziken and it's ability to pass on speed to others that desperately need it.
It's a work in progress that will get utterly thrashed by Trick Room.
IN that case, why don't you replace a pokemon with slow speed, with High attack, and average defenses to cover that. Something like a Ferrathorn, which resist most moves, can set up Stealth Rock (EDIT: Only is tutored in BW, it seems...), and damage to Swift Swim Teams, or start with a Bronzong to mess up the Trick Room.
I miss my Whimsicott. With Prankster, Encore, and Sunny Day and Trick room in its arsenal, it defeat teams like that...
EDIT2: If you want, we can do a quick battle.
Pun intentional.