Dear Rkkarnani,
I have written a post in the past on SL management and protecting your capital. If you go on my first post you will see the link.
Please understand, on a real time basis your EOD EMAs will by dynamic i.e if NF is trading at 5000 and we see 15 EMA at 4850, we cannot blindly ADD at 4850. This is because by the time markets falls to 4850 during the day, 15 EMA would have dropped too to lets say 4820. This is where 'visual' retest of 15 EMA is important. Hence we add only when we see a visual retest which might happen at 4820 or 4810 or even lower.
Lets say we ADD at 4820 when visual retest happens and markets rise later in the day and mkts close at 5000, 15 EMA would close around 4850. By waiting for a visual restest to ADD we were just able to buy at a lower price (4820 instead of 4850).
Conversely, if the markets dont rise but keep falling, its possible a bearish crossover happens at 4700 levels which forces us to exit longs and open shorts. Again we are not worse off since we added longs at 4820 and not 4850.
Visual retest works in our favour both ways since it delays our add when market is correcting against the trend.
I do not keep any filters becuase I cannot define any % to be used as filters since the underlying 15 EMA value keeps changing during the day.
So my thumb rule stays as 'Add only when you see price retesting 15 EMA without waiting for candle to close'.
Rest is upto the users and their improvisation, they can always better this system with their experience.
Cheers
Stockhunter