Well… I started messing with yoyos back in 98. So based on my daily practice sessions over the last 14+ years: soo much time per day/per week/per year; including some serious marathon sessions when I thought I was actually ‘on to something’… including Sundays, when I could have gone to Church but instead stayed behind to get in some quality throwing… and throwing at work on break and during lunch=
I would say close to 1 hour ToTaL.
Maybe even slightly more if you include some months I Totally Forgot?
PS… I have to admit that I did not include ALL the time I have spent trying to learn 2A. I got a serious problem goin on there. You see, I want to 2A really bad, but my right arm totally refuses to Throw; Period! So what I have been doing for the last several years is attaching both strings to my left hand: one on my index finger and the other on my ring finger. Let me tell you something. Looping both at the same time is difficult enough. Just try alternate looping with both yoyos tied to the same hand. I have been fatally injured at least 3 times.