Horse Laying Systems have only really come about in the last five years or so, as a result of the massive growth in the betting exchanges (Betfair, Betdaq, WBX, etc).

In a nutshell, a laying system is a set of rules which can be rigidly followed in order to identify horses which are trading at odds shorter than their true chance of winning. For instance, if horses that align to a set of rules win only once in ten (i.e. 10%), and yet they have an average starting price of 6/1, we can 'oppose' these horses with a degree of confidence, knowing that in the mid- to long-term, we will come out in front.

Of course, the thing about laying systems is that they do demand both discipline, and a betting bank. It is entirely possible for the first wager struck to be a winner (and therefore a loser for the layer), incurring what might be a hit of eight times the prospective winnings.

A bank of at least 60 points should be used in the case of laying 6/1 shots (on average) with a 10% win strike rate. If you lay at odds higher, you should expand your bank accordingly. Lower, and you can possibly be more aggressive with the number of units in your bank.

It takes at least six months worth of data before you can be confident that a laying system is effective, so look to those that have demonstrably good track records over an extended period of time.

On this page, you'll find some of the laying systems I've reviewed over the past two years, and there will be further products added as time passes.

My favourite two systems are my own Laying System product, the results for which can be viewed here: Laying System Results; and, Racing Secrets [Exposed], membership for which is often full.

You'll find the original reviews for all of the laying systems I've inspected below.

Laying System 10 / 10

Laying System is my own system, of which I'm very proud. I may also be slightly biased. ;o)

That said, the system has achieved over 80 points profit since November 2008 (time of writing is April 2009), which puts us nicely on track to achieve our annual target of 150 points (or �15,000 to �100 level stakes).

Although it's called Laying System, it's actually a membership service based on three separate laying systems, which collectively form the portfolio. All three are handsomely in profit as I write, so you may elect to only use one or two to suit your own laying style.

The system comes with a 7 day free trial, so you can see if it works for you. Sign up for the trial here.

Racing Secrets [Exposed] 9.5 / 10

Racing Secrets [Exposed] is an excellent manual, based on really sound common sense laying principles, and available for just �7!

As you might expect, there is a bit of a 'catch': in this case, when you buy RS[E], you sign up for a monthly subscription service, the first month of which is free. So, if you don't want to get the qualifiers after the free period, remember to cancel your subscription, and you'll only ever pay the seven quid.

Winners To Losers 7.5 / 10

Winners To Losers (W2L) is a classic 'old school' laying system. It's been researched using a proprietary racing database, so I was able to check the results over the last few years and vouch for its consistency. This mitigated the facts that in the short period when I was trialling it, W2L made a small loss.

The system will have losing runs (as all systems will!), and overall looks a good addition to your betting portfolio.

Read my review here...

Betalay 7 / 10

Curiously, Betalay may be the system that - above all others of those I've reviewed - has most polarized opinion. It seems, like Marmite, you either love this or you hate it.

It is a very simple system, and it does produce a lot of qualifiers. As such, it is more than capable of generating losing stretches. But, during the trial period, it did very well, and it seems to have longevity too.

Read the review here...

Lay365 2 / 10

Oh dear... this one is really not good. Dodgy results claims, managed from a hotmail email address, and worse.

Read why I'd swerve this one here...

Lay51 Operation 0 / 10

Far and away the worst horse racing system I've ever seen, do not even consider buying this.

Read why here...