Bowling fans' appetite for light-heartedcompetition in the summer seems to be growing. The GEICO PBA Team Shootout a four-week, 15-episode series onESPN that was taped on specially-constructed lanes at Six FlagsGreat Adventure in Jackson, N.J., posted a .41 Nielsen ratingsaverage, a 14 percent increase over a year earlier. The ratingsnumbers convert to an audience of more than 450,000 viewers perhalf...