1
Fair point.
If you combine '04-06 you get 359 PAs which is still partial season. In those three combined seasons he had a 17.5 LD%.
So:
17.5
16
17.8
19.1
If I had to guess I'd put him at around 18% for next year, but the fact that he did better last season might point to some upside.
LD% is a bit flukish season to season though. You're better off with the larger sample.. Not that Kotchman has a ton of career MLB PAs.