If you want to clear it, work for it and you may get more rewards than the loot of such raid. I will tell you my experience so far:

Been trying to clear t8 but it is hard to find people to learn the fight, i joined some of those pug and at first i did not have a clue of what was going on, even tho i checked some video guides out there, so in the end was a fail. So after 2 week of trying to find a group i took time i did some research, study the fight mechanics, asked friends out there for advices, make my own macro, decided with path to take, took more responsibility on each boss mechanics (main ballistic missile, clear mines, push tower) changes job to learn how Homming missiles work and stuff and even MT the boss. In the process i raided with many different people but as week passed by i was getting invites from the same pug players so we started working together, each step each week, and at the end we got all the clear... and a lot of new friends were added on my friend list.