What do you look at when steering?
Too many helmsmen I sail with become mesmerized by the telltales. I'm not saying that you shouldn't use them, but the less you depend on them the better off you'll probably be. I put telltales about a third of the way up the genoa and two feet back from the headstay. I also like telltales on the shrouds. The best skippers use these telltales, but they also use the speedo, the waves, the horizon, the angle of heel, and so on. The person who uses many different factors and is able to compute them while steering has the best chance to become a good helmsman. I try to emphasize getting away from telltales and using them only as a reference.
A big boat is generally hard to feel, at least compared to a one-design. That's why it's good to stand up on the weather side and get as much input as possible when you're steering. You can't rely on just one thing; if you're only looking at the telltales, for example, what happens if the sail trimmer has the jib in too tight? You could be sailing by the telltales beautifully, but slowly and surely, the boat will start going slower and slower.