The real problem in using the sheets nowadays(either rags or thoros) is they have done too good a job.
In the "old days", it was not uncommon to be looking at a 14 horse (that wins) at 6 to 1 running against a bunch of 17 & 18's but not now...that 14 horse is the odds-on fav.
The other situation I constantly run into are races where, besides a few obvious throwouts, every horse in the race looks like it will run the same number (all 17 races are especially popular at Saratoga).
I have been using the sheets since the middle 80's and am about to quit....which means I will no longer go to the track (something I enjoy) as I couldn't handicap a race using the DRF to save my life.
Somebody out there puleeze help, I will really miss ol' Sufferin Downs!!