I do this also with satin covered foam rollers. Mainly for going out in the evenings.
I don't mist or rewet my hair, sometimes I do it on my hair when it hasn't been previously rollerset.
I try to leave them in for at least two hours, because I will most likely be going to a club and dancing or whatnot so I want the curl to hold. The straighter my hair is to begin with the longer I will leave the rollers in.
I mist with a light holding spray and they last the night usually.