I just use Dennis's rating and take the strongest and weakest from Dennis's rankings. This means I can just concentrate one of currency pair per day.
So today (Thursday) it would of been the NZD v CAD - If by using the other currency strength meter. If one is the strongest and the other the weakest I buy/sell that pair.
Today the CAD reached a rating of 90 which is extremely strong but the NZD rating was about 55% mostly all day which means it was neither strong nor weak. So no trade even though the CAD dropped alot.
Still testing it but no trade today but had 3 out of 3 winners so far. Over 900 pips. Still testing it out and trying different settings but I ALWAYS only give a rating to today's candle. Im not interested in the past candles.
At the time of posting this the NZD = 29.8% and the CAD 55.1% - The Hoping tomorrow the NZD takes off again. We will see.
Hope that helps.