What to do if you suspect a site of being rigged

[Meths]

Hi
I've been playing on the net for a while and am a constant winner on low/mid stakes games. Been playing on stars and party and doing well, but I started playing on another site and i've become convinced that its rigged. Playing on cash games I get amazing luck in some pots and then just get sucked out on every time, I think the site is rigged to make sure theres lots of money in the pot for the rake.

Problem is this: apart from not playing there, what can I do about it? is there some kind of statistical analasis that can be done with hands? and how would i go about this?

This is a big company and if they are rigged i'd like to try to hit them as hard as possible, but really don't wanna go round sounding like the typical 'all net poker is rigged' type, because most of the sites aren't rigged, just the bad ones give everyone else a bad name