Used to do something similar ages ago and I see the ITV guys have a go each week in a slightly different way.
The idea is that you have a theoretical £20 to take to the bookies, you can do whatever you want with it.
Back just one horse, back 20 horses or do a yankee and a placepot, the choice is yours.
Hopefully some of you will chip in now and again, it's just for fun, just stick all of the bets in one post so we can work out if you made a profit or not.
Good luck, sp