handicapping ?-drf charts???

[wac]

do any of you guys/gals look at the drf post race charts? i printed off all of Keen and am in the process of printing off CD races as they go and looking at fractions, post positions running styles that won on those days etc etc but does this really lead to anything in your experience? Are the horses that run good clobbered next time they run odds wise b/c the infor is out there?