Try sites like PS3trophies.com/.org for people to help with boosting, chances are that others here will want to boost as well. For me, it was just a matter of taking turns winning with myself and two others.
I, being the genius I am, decided to be boosted to rank 1 last, so when we were finished, my save had rank 1 stored in case I ever decided to play legit.
I did the same and i am rank 1...but when u are boosting there is always the chance that the other person is a scumbag who leaves u afterwards plus add to the time u waste for the people completing their own ranks.
Precise reason i collaborated with yuki for offering portal 2...i have always thought of "time is money" and i cant be arsed wasting that with boosting and increasing that time double or treble depending if i get a rotten boosting buddy.