Not sure what you mean about 70x turnover to claim rakeback though. You get rakeback rightaway, the 70x wager requirement is for bonuses (rain, and the hourly/daily/weekly contests). My tactic now is to use the 70% RB rushhour to wager 50% of my bonus wager requirements at house edge games.
Am I missing something here? I thought too that the rakeback is subjected in wagering requirements because I didn't notice additional funds when I'm playing while my bonus balance keeps increasing when I'm playing. Is there a way to track how much rakeback we are earning during the day when the daily reward distribue?