(please feel free to correct any of my thoughts if I'm off track...tia)
trader_boy,
Whoever you use when you buy/sell stocks should offer Level 2 so you can see the prices as they trade. They should also offer live charts. Now let's pretend you have had 10 stocks on a watchlist and 2 of them are closing in on a 3 and 15 day MA crossover.
The next day you would watch the price action of the 2 stocks. If towards the end of the day you project it clearly closing above the 15 day MA...AND...the 3 day MA does in fact cross over the 15 day MA, buy that pig before the close of the day because you have just entered at the beginning of the reversal.
You just have to have a watchlist of stocks and the ability to watch them throughout the day (periodically) to see if they develop.
Also, and I can be wrong on this one but don't think I am, if you miss the buy in the afternoon but buy the next morning - you are still buying at the beginning of a very nice run of at least 20% ROI in the short term.
This is an EXCELLENT trading system.