ROCK SPRINGS, WYIn spite of the varsity cheerleaders' enthusiasm, Rock Springs Central High sophomore William Boelart would have actually preferred not to have participated in the school's pep rally Monday. 'I appreciate the thought, but I didn't really get into being wheeled around wearing a rainbow Afro and holding up a banner that said 'Bulldogs Kick A**,'' Boelart said. 'I like it better when the popular kids avoid eye contact with me.' Boelart was last used in a school function Dec. 11, when he played a corpse in a production of Arsenic And Old Lace. 