Gotcha, just confusing. Plus I saw the other topic with the information.
Since I don't know how you bowl, I will tell you what I would do.
Start with a pin down medium oil solid ball at around 1000 grit. I would try to keep my angles as straight as possible to start. I don't want to have huge launch angles. This will hopefully keep the middles lasting as long as possible.
Once that ball starts checking up, I would try to ball down to a medium/light hybrid or a pearl with some surface (2000-3000). Still want to stay away from the middle as much as possible.
Once that option has been exhausted, then I will go to a medium strength pearl and start moving in. Hopefully the middle is still there. If I have to move even further in, then I increase the strength of my pearl.
If the tournament is a shorter one (<20 games total on a pair) then I would move inside a little earlier. Also realize, the developed characteristics of the lane bed will be more prevalent when a center goes from days upon days of THS and then runs one day of sport. If this was a multiple day tournament, then each subsequent sport oiling will be more and more difficult.
right handed
400-450 rpm
16.5-18 mph
medium rotation/tilt
