I find it humorous too how different coaches react to the same pitch. One of the colleges near me often asks me to call some intersquad scrimmage games for them. I find my strike zone to be very similar to one described by Mike (maybe a little lower at the top of the zone

). When I call stikes on the outside corner the hitting coach goes ballistic while the pitching coach is ready to buy me dinner!
One thing I've found in umpiring is that strike zones are strike zones and everyone has one and they are all different. Some people can't see the outside of the plate as well as others. There are those that have trouble with balls at the knees. If they are consistant with
their zone, most coaches don't complain too much. Other than my patent leather shoes, I get more compliments on my strike zone than anything. I just wish I could figure that darned pi thing out . . .