One more to add to the Ehlers collection. Ehlers Instantaneous Trendline, by John Ehlers, identifies the market trend by doing removing cycle component. I think, this simplicity is what makes it attractive :) To understand Ehlers's thought process behind this, refer to the PDF linked below. There are atleast 6 variations of this ITrend. This version is from...
Is It Uptrend or DownTrend? Are you lost? Follow the trend with CapnBands :)
GRIB Trendline show the distance betwen the price and the SAR with the GRIB settings in percentage. It highlight the elasticity of the wave. It's designed to be used with trendlines to spot the bottoms and the tops. More explanation here : and here : note : do not use "selldot" and "buydot", i was testing something and gave up about the idea