Frank -- Ewest pointed me to this thread and asked me to comment.
In general, I like both of your charts. I wish my undergrad students would show as much interest and thought as you!!

Of course, the grad students do show that much thought.
Another generality, probably meant more for Ewest than you. The one thing I really like to see on relative weight information is the time of year. Big seasonal changes can occur in fish condition. Most fish hit their peak just prior to spawn, hit the year's low point just after spawn, and then gradually increase again. So, I do like to know something about time of year. Otherwise, you can make a mistake in your interpretation.
As for specific comments on Frank's condition information, I hesitate to say too much. Greg Grimes already spotted the thread, and hopefully he'll provide some input. He has the local knowledge that you need. What are reasonable and attainable condition values for your location? Greg will know. In the upper Midwest, I can say that pondowners would be darn pleased with your values.