If you have no time to go out, Join OkCupid, sort out some photos and profile. Then do as i do, send a message to 100 people each morning, just some generic shit. Then hide their account from your search. You'll get to the end of the list relatively quickly. Once you've reached the end, every sunday morning send the same generic message till you reach the end. To whoever replies tell em you'll take em for a drink then just ask for a number.
Hopefully it works for you, I've managed to get two dates lined up this week.