Look around at the other houses in the area (if there are any close) and see what they offer. One of the others might have a league that allows individual pre-bowling. Or, see if they offer a "flex" type league. These usually bowl in the afternoon, but are very liberal with their rules since they are made for people who work shifts. Many times they are not sanctioned, but are better than nothing. If not, see if another guy at work on the opposite shift will split the league with you so that who ever is off bowls. It wouldn't be ideal, but you'd at least each bowl half a league. Keep your options open and ask lots of questions at the front desk. I worked a swing shift for 15 years and while my options were limited, I never missed a season.