There is no one "best"  strategy to be a great investor.

Please read Mr Koon's strategy.  

1.  His strategy is very concentrated, 80% in undervalued Plantation, and he sees the opportunity now because 2013's CPO traded only at RM2250 per tonne vs peak of RM4000 plus.

2. Secondly, he goes for highly undervalued stocks, the non so popular or less covered by many analysts.

3. Thirdly, not only he goes for undervalued stocks, another important factor is growth over next 2-3 years.

4. Another criteria is that he goes for long term, at least 2-5 years.

5. He invest by looking of a the stock from the perspective of businesslike. Like, for plantation, he uses RM/mature ha versus the recent traded price.  Hence, from there he get the  margin of safety.  Although we know that plantation stocks has a long gestation period, first 4 years, making losses, only 5th year to 30th year is making money.  So he do not really look as past PEs or ROEs.

My personal views

1.  Invest in the industry you know best.  If you do not know, learn from analyst report.  Study the trend for the said industry, most industry goes through up and down.

2. Follow his winning strategy, have a portfolio that is CONCENTRATED (80%), UNDERVALUED compare with peers, with good GROWTH, and think LONG TERM as well as BUSINESSLIKE.

3. Comparing with other industries, I have listed a few (I am sure there is more) counters, Genting, UP Plantations, and some others, really, over a long period of 10-13 years provides a CAGR of 20%.

4. It is not easy to find this WINNERS, you will have to do your homework, no shortcut.

5. Some counters that I believe has those characteristics, Protasco, Silk, CBIP, some of the plantation stocks recommended by Mr Koon.  So, you will have to pick your own that you are comfortable and stick with it.