He smokes them with some nice herbal mixer (something like wild dagga and shit like that that taste really good) with a filter in small papers (smoking ecos) and I guess I didn't mention he only rolls Sour Diesel (roughly 425 an O in our area) or some shit we call Hawaiin (475 but it's worth it in my book) which is top of the line.
He basically pre-rolls, and saves all his joints in a big ass tin so he can smoke any time he wants. He sells a good amount (mostly mids, and then he buys good shit for himself) and doesn't smoke too often, and often just ends up giving away a few his joints to me and his friends.

I tried doing it but I didn't like it either. I gotta go with GB and Cigarette shaped one hitter if you're trying to conserve weed. I think pre-rolling is good for casual smokers/or if you know you wanna smoke alot later..