keep playing tightly ep. and start "hiding behind limpers." you arent open-limping in these situations. and, get rather wide from CO and BTN. viola.

marginals like sc's, pp's <TT, AXs are what i would "hide" with. that is if you arent into "isolation." if you are isolating, obv, raise these hands. i run about 20/10 if not isolating. if isolating, i run about 18/15.

but, you asked how to hit vpip of 20% w/o open limping. thats one way.