Other place to try as well that time of year would be
The entrance to Hidden Bay, there is a small cut there with current running year round. It can be a dynamite spot during spring and winter.
Anywhere where there is current and cuts. Channels, etc. A great place to start would be Louis Narrows.
If you really want an adventure make your way into Jackfish for the day, and fish some of the structure on that part of the lake. I have grown to love Jackfish and it has produced for us alot.
Also when fishing the Pipestone Falls one of the best way and close to snag free way to fish would be a red hook, or a plain hook and a red bead, with a split shot about three-four feet above the hook. If you don't mind losing some split shots, that seems to be the best way because usually your split shot snags and that pulls right off. We will anchor up in there and cast that way, or throw out slip bobbers. Watch out for the Northerns!
Let us know how you do.