In 100/200, Double Trouble, Modified Double Trouble, and Top 20 Sector methods the concept is same. We want to capture a slice of a pre existing trend. Understanding that concept thoroughly is the key. If you understand that then the questions about stops will have context.
The best points of entry in such stocks are not in the middle of an upward trend, but instead on fresh breakouts after a period of weakness or consolidation. The following figure illustrates this concept: more
The concept of swing trading is to trade an upward swing in a stock experiencing a strong uptrend as defined by relative strength or sector stregth. Relative strength is a measure of price trend that indicates how a stock is performing relative to other stocks in the market.