I am new to plugging and would like some pointers for larger rivers with nondescript holes. I believe the basic technique is to slowly back down holes working side to side all the way down to the tailout.
I think that classic plug water is 7-10 ft hole with a defined tailout and softer water at the head.

Can anyone enlighten me?

Thumper any hot tips for plugging the Lewis?

Do you change size of plug or bill to work the deeper holes, or do you use a diver or lead?

I find myself at a loss with plugs mainly because I have yet to get a steelie in the river with one.