When I was “Try Harding” GT sport, I was spending around 3-4 hours on a weeknight, and 8-10 hours on weekend days, sometimes more, trying to catch the fast guys. I got as far as making a few live Top 16 NA races, just to finish 30-45 seconds behind the race winners. I think me best finish in a T16 race was P10. Like I said, those too guys are FAST, and they pretty much live and breath GT. So unless one is supremely skilled to start with, making alive event is near impossible, unless you quit your job and race 8-12 hours a day, 7 days a week.