If you have to go anywhere by train, but you have a reservation ticket of waiting list then you may not get confirm ticket due to heavy rush. Confirm seats are subject to availability of seats after booking tatkal quota. But there are some trick to confirm your waiting list ticket.
Railway preserves many seats for many categories. These categories are – MP quota, MLA quota, District Administration quota, Army quota, Doctor quota etc. If you have good connection with any above person then your waiting tickets will confirm after authorized person’s recommendation letter.
Thus you can get confirm seats on waiting tickets.