What do smart lifters do when they're working out alone and want to do benchpresses?
I have a busy schedule, and it isn't practical for me to have a regular weightlifting partner. I've usually avoided regular benchpresses in favor of either dumbbell benchpresses or smith-machine benchpresses. I like to lift to failure on my final set (or at least get very close to it), and don't want to get trapped under a bar. Also, constantly having to get a spot from strangers in the suburban globo-gym I lift at seems like an imposition.
I see other people benchpressing alone all the time, so I can only assume that my fears are a little exaggerated. What do smart lifters do in that situation? Just not go to failure? Switch to a smith machine for the last set(s)? Just not feel guilty about asking a stranger for a spot?
Details about my background - I'm currently benching a pair of 60lbs dumbbells for 3 sets of 7, and feel comfortable controlling the weight. But I'm curious about switching over to working with a barbell.