Generally, I will carry a strike (not necessarily leave the 10, but any pin) about 60-65% of the time on pocket hits, if you figure the 10 is probably the most common leave for a right hander on pocket hits, it's probably left as often as any other one or two pin spare put together, so the 10 is left on pocket hits about 20% of the time give or take a little bit. Just as another stat, in 39 games in my league this year, I've left 48 10 pins, as compared with 23 4 pins (the second most common leave I have). Probably more information than anybody was asking for, but those are the numbers.