hu pre flop play

[thebrain13]

how often do you call, raise or fold on the sb heads up? i was thinkin, i open raise with 60 percent of my hands off the sb unraised, when heads up i have position, so i should play i figure, at least 80 percent of my hands... who knows maybe even a hundred. also calling seems like it should play a big roll, but really i have no idea, what do you guys think?