Well - I don't know if it applicable to you or not - but still i feel it is a MUST for any trader however seasoned he is to backtest a system BEFORE trading. You may be good and disciplined enough - but others may not be. New traders can be misguided into believing that making money is so easy. Believe me - IT IS NOT. Unless one backtests a system, then trades a small quantitiy and makes some rules, it is simply not possible to succeed.
So if anybody feels or mentions about a backtest or rules, it should be respected and understood in a larger perspective. Again I repeat - you may be seasoned enough to handle things but many newbies may not be and can get carried away easily just by the figures and may make mistakes in trading.
Regards
Alok