WATCH: Using Tom Cruise to pick a winner and other helpful Grand National hints

There are many ways to pick your horse for the Aintree Grand National.

You could heed the advice of a racing enthusiast, you could match each horse to a celebrity or you can stick a pin in the form guide - as millions of us will do Saturday morning. But, nobody likes to make an uninformed choice (that is what the office sweepstake is for), so we instead go with our favourite jockey, a famous owner or a good name. https://twitter.com/_ChrisBascombe/status/850301708555124736 Hayley O'Connor of Ladbrokes took the card for the most famous steeplechase in the world to the Liberties to canvass the opinion of some street traders. All manner of factors were considered when picking from the 40 runners - we had Tom Cruise's likeability, Michael O'Leary's truthfulness, dance routine, superstitions and even divine inspiration. We also learned what one trader would do for €10,000. Not only would he jump one of the fences at the National but, he'd "jump over the Great Wall of China for 10 grand!" Watch the video below before sticking your pin.