Alright, I'm stumped with this problem in super doubles. As you can tell from my sets, I like to try out things and not just get my sets off smogon. But I need help now. I nearly lost because my rock slide missed both opponents.

My team is:
Froakie @ Leftovers(going to change this to life orb since I found out that mat block isn't increased priority)
Jolly

Mat block -lead
U-turn
Rock Slide
Filler/need to level up for night slash

Trevenant @ Sitrus berry
Impish

Subsitute -lead
Horn leech
Phantom force
Leech Seed

Rotom-W @ Weakness policy
Modest

WoW
T-wave
Hydro-pump
Thunderbolt

Noivern @ Wide lens
Timid

Boomburst
Flamethrower
Hurricane
Focus blast

I think it's obvious what I do but I'll explain anyway. Mat block to set up the sub. If the opponent has anything dangerous that I'll need mat block for again I U-turn out into Rotom-W. Rock slide if I can OHKO or I really have to weaken something.
Rotom is there to prevent t-wavers and fire types from coming up too often. Flamethrower to stop grass types from blocking leech seed.
My biggest problem is that I can't hit both sides at once with anything other than boomburst and rockslide. Boomburst is great but I run into ghosts and I have to have trevenant up so I don't take friendly fire.