One quite simple way of achieving more subtle presentation, is to use
a longer leader, and aim about a foot or so above the water when
casting, so that your line floats down gently, and does not cause any
disturbance.
This requires a little practice, but you can then present even very
heavy lines with considerable subtlety, and more to the point, the
flies.
--
Regards and tight lines!
Mike Connor
http://www.mike-connor.homepage.t-online.de/
http://groups.google.co.uk/group/Flycorner?hl=en