I put a row of empty plastic water bottles on the top of my TV and while watching some crap show, I practice shooting them with the SIRT. Use the sights. I also had a dot target from Greg Ellifritz's site on the wall and would shoot that. My wife made me take it down.

The retention draw and shoot though, is interesting, you can come close to center mass of the Venetian blind of the three panel windows. I am an advocate of sights though, but practicing that position is worthwhile, IMHO.

Did the water bottles with my J frame the other day. Empty gun, of course, checked and rechecked. Didn't have to move a picture.