I see lots of ads on TV for cordless drills. In almost every case, they are
chucked up to a simple #2 Phillips bit. Why is that? Don't they know about
all the quick change extensions? I have used just a bit in a pinch, but
many times, the chuck runs into the wood or something else. Plus there is
no slider to hold the screws until they get started. Do you use an
extension or not? I almost always do.

Steve