Money management first

Some time ago I purchased a forex trading system ( yes I know but check out my name). The vendors promised a success rate of 75% and a money back guarantee if buyers could prove it made had a loss over a 120 day period.
I thought there was nothing to lose since the promoters of the system always honoured there money back guarantee, so I purchased the system and waited expectantly for it to arrive
As you have probably guessed the system was laughably puerile but I set about paper trading so I could prove it was rubbish and reclaim my money. Sure enough, loss followed loss and the 'success' rate was less than 10%.
At the end of the 120 day period I calculated the profit/loss and to my amazement it had actually made a profit. The reason, of course was that the losses were strictly limited ( never exceeding 7 points) while the profits were allowed to run and run (until a moving average was crossed.)
Now if a crappy, low win rate system can achieve a profit using low risk along with strict money management how profitable could a system be with a high win rate using a similar money management model?
So I am starting this thread with a few ideas of my own and would welcome the input of others with the aim of developing a profitable strategy with a 'low risk and letting profits run' philosophy.
More to follow

Well you probably know now that a promised success rate means absolutely nothing unless the vendors had a crystal ball to tell you that the market's future conditions will be ideal for the system.

To gauge whether a system is going to be profitable, at the very least you ought to know 2 things: the RR ratio and the win rate. Knowing only one of the two is pretty useless. If either the RR ratio or the win rate is bad, then the other can compensate. From what you've said, the terrible 10% win rate was compensated by the massive RR ratio.

What money management system are you referring to anyway? There are a bunch of them out there.

sooner or later or in some cases never, a trader would realize that success rate at best is 50/50.. and it's the trade/risk/money management what would make the difference.

Risk management is sure way to make profit even with the worst trading system. I have once traded looking only at chart without any indicator and still managed to make good profit with fixed profit/loss ratio. The whole game is about increasing probability. Try to find 2-3 patterns, or signals that will increase your probability of winning. Too many signals will slow you down and create confusion. Just try to increase your probability and you will see it is very easy to make money in this market.