I've been told mats make you think you are better than you really are, and I suppose I can understand that, as you can't really hit it fat off a mat, but my question is in regards to the little rubber tee thingies. Can those alter your shots a great deal?
On mats I have a nasty slice (driver), so I work to correct it, and get it to where I think it's manageable, then I hit the course for league and it vanishes, or is much more slight. Unless I go to the range and just try to kill everything, which I don't think I do, that's the only thing I can think of. Any ideas?