I approximately started to practice the M ROLL around 2007. More intensively in 2009, with regular sessions, let´s say a 15 days session every 4 months. During these sessions, I play it 40min in average per day. So the total amount of hours could be around : 3 years x 3 sessions x 15 days x 40min = 90 hours I also tried some little exercices, like trying to make short puzzles with pastic tetriminos and try to remember it in hidding the assembly. And during the last 2 years I´ve watched some m roll, again and again in trying to understand every placements. I can´t stand anymore people who reproach me my gap between my regular skill and m roll skill, suggesting me to practice the m roll if I want to get higher grades. Like if I was not already trying. And the pain is worse when I see more and more people who can improve so easily. I think the worst I have heard comes from TWF until now. Because TWF has been able to master invisible within 2 weeks (he told me that it is a quick matter of 2 weeks a while ago), he thinks that EDO and 777 just rejected the m roll. I really really dont think this. For me 777 and EDO tried very hard for a while, maybe more than me for 777. And unfortunately they did not find the key like me. They just prefer to save appearences so they hidden this failure pretending aiming for pure time attack only. EDIT : the vote is anonyme because I really want to know your opinion, I am already prepared to admit that I will never do it, so please say what you really think and don´t reply "yes" to only encourage me. Whatever the result, it is just a video game.