Get yourself a job with a company that operates twins as well as singles. Sounds obvious I know but thats what I did 15+ years ago. If you work hard enough and show them that you are committed they might offer you a twin conversion, repayable over "x" number of years.
I've not done Charter/Public Transport for a while, but from memory it was always quiet at this time of year (icing conditions/short daylight hours). Come the summer things should pick up.
RC