I try every night. I never deliberately screw up to manipulate my average. Sometimes I screw up, some nights I know I'm not "on". Some nights I've got problems with my game and I can't fix them, but I don't shoot 278 for three games.
As SrKegler said, some people are down, some are up, and it's just the luck of the draw. I don't believe in penalizing those who have worked to improve over the summer because others chose not to. We use our last year's average for the first 9 (12?) games, then compute a new average based on those first three weeks. No 10-pin drop rule, and those who worked to improve over the summer like I did win a bunch the first few weeks, those who didn't lose.
Coming out guns a-blazin' can really help the team's morale and attitude, so taking an early lead in the first few weeks can really do a lot to help the team maintain that lead. Starting up with a bunch of losses because your sorry butt couldn't be bothered to practice and hasn't bowled in four months, that can hurt the morale and seeing your name at the bottom of the standings doesn't feel good.
SH