The automation idea mimics a free tool Betfair used to have, called the percentage advantage indicator. It used to show the current back price's % advantage to the Tote and you could nominate which one. It was terrific, but what did they do....got rid of it...too much help to the punter!

In the automation I have in mind, it'd scan the bookies prices and if there were 2 or 3 >= current lay$ at a set time fire a lay bet. Dunno if it'd work, but it'd be nice to trial it and record the outcomes?