When adding sugar I use natural sugar not the white table sugar. The natural sugar seams to be enough of a difference that it does catch more fish. I am not sure what other stuff is in the white table sugar. I use the Pautzke borax - o - fire and add a cup of the natural sugar. (THIS IS NOT BROWN SUGAR). then mix it up well and use as Pautzke suggestion for steelhead.
For salmon you do not use sugar...