I do not understand where to position myself when trying to do a wet fly swing. The thing on this site looks like you are casting almost directly downstream, and some other places say cast upstream and mend. Can someone help me or explain this a little better? I need to keep a tight line throughout the swing? Also, I have these 6 foot sinking lead leader things that I hear are good for swinging streamers in the great lakes and erie streams. Can anyone help me here? My main problem is keeping a tight line when casting accross stream, is this even right?