Very rarely do I use reverse in racing... if I get hung on the pipe and I do a mental count to 3 Mississippi and the marshal still hasn't seen my car, nor RD and there's no oncoming traffic, then I feel it's warranted. I actually used it this past weekend when being marshaled by a novice driver who blindly stared at my car just a couple feet in front of him, I guess he froze and the RD didn't call anything out until after I used reverse (go figure?) yeah just a bunch of levels of wrong mixed in, but it was a qualifier so I justified it to myself, yeah I was a dork, but I was a happy dork instead of getting pissed off at the inexperienced marshal.

There have also been times where a marshal refuses to rotate my car when it's pointed the wrong direction, or they marshal my car backwards, so then I will do a J-Turn.