Margo's strategy is simple... its shorting resistance and fading stocks near their relative highs.
In my opinion this is a good strategy soley based on whether someone really understands market conditions. In a bear market this strategy is great.. but in a choppy or bull market.. you will get toasted. The real trick is understanding what type of market you are in.
Personally, the easiest strategy that does not require too much of general market sentiment is trading the pulbacks in the direction of the stock's strong primary trend. This is because 70%+ of stocks will follow the broader market.. so in a bear market the majority of your trades would be finding the trendiest stocks... and shorting the bounce of lows.. and vice versa in a bull market.. The setup itself.. is a by product of the broader markets...
However, what Margo is doing.. is not.. thats why I think its more dangerous.. In my experience these types of strategy do not whether any type of storm.. so my advice to Margo is... keep doing what you do.. until it doesnt work anymore... and when the time comes (maybe not for another few years) be ready to buy the trendline breaks.. or else you will get destroyed.
For example.. look back prior to 2000 and see what would of happened using Margo's strategy. Then look back prior 2000 and see what would of happened if you were buying the pullbacks off all the stocks making higher highs.. After 2000 the majority of your trades would of already been shorting the lows...
just my opinion,
--MIKE