We've had so much trouble with packers discounting our club calves that last year we decided to go to ultrasound information for our carcass contest, much like the bull test stations get their info. I know this may not be "real world" to some people but the discounts were costing the families a lot of money plus we can do all the cattle this way--even those going on to state fair, etc. We provide the IMF, BF, and REA to ISU and they do the calculations for us. The downside is that we have to use a common dressing percentage but we do get very good, comparable information for the kids. My daughter's market heifer(home raised Shorthorn/Simmy/Maine cross)won our "carcass contest" with a 17.3 REA, .31 BF, and 4.6 IMF. In looking at the Houston carcass results she might have even done pretty well there. The good news is that she is still alive and is due with her first calf any day now.