When we're traveling in that straight path to a stop on that back cast and
that straight path to a stop on the forward cast, we have to make sure that
we pause in between those two casts and let that line roll out behind us.
Just as that leader is about to straighten out, that thin, clear piece of
line, then we can begin our forward cast.
When we're casting, though, we can move in a straight path, virtually
wherever you want. You can make a straight path up over your head. This is
kind of a classic trout style of casting. You can make that straight path
more out to the side. This is more common in some saltwater situations.
Or let's say you're in a tricky situation, where you have to cast
underneath a bush or underneath a tree. We can make a low angle cast, down
here, and get that fly out underneath something.
So that straight line can be at any angle we want around our body.