I have never been to that website. I use Trendline in my trading. The best way to draw trendline is using the right time frame. Watch out how the price reacts when it is at the trendline. There is another rule to draw trendline is it takes at least two touches to draw a trendline and three to be confirmed.
In Fx trading each the trader has a choice of the broker to be used , should the trader can choose a broker that is more appropriate to the concept of trading that will be used , if you love scalping should choose the broker that allows trading concept such as this. As a scalper from my first day of trading I have been using LQDFX which for all time make sure best trading environment for scalping by providing lowest trading spreads from 0 pips. So, my trading life is very much comfortable when scalping.