I rarely bracket my shots. Only when testing films, and thats usually at two stops over and under box speed to get a sense of current speed, and pull/push ability.

I also routinely use a polaris dual 5 spot meter, or use bodies with meters I have checked, trust, and have performed well over time such as my om4t's and f3hps, or by chance if I am using a later AF Body those are usually quite accurate too.