Preflop play: call/raise every hand as SB?
I'm still a little new to HU SNGs. As the SB, is it +ev to call/raise with every hand? My approach has usually been folding starting hands with less than 50% equity vs random. But by calling you're getting 3:1 odds (assuming the BB checks) and you have the advantage of position, and of course raising gives you folding equity.
Versus tight/passive: Raise?
Versus loose/calling station: Call?
Versus loose/aggressive: Raise with 50%+ equity vs random hands, fold the rest?