YankeeJim: Just don't make the last putt and it won't be recorded and that doesn't hurt you. GL
Quit before reaching the stroke limit on the last hole. I know, because while playing a rated round I began to lose hope...instead of starting over I began practicing my chips on the last hole...not realizing the game would end and post my score, even if I did not hole out. I posted my highest 9 hole score ever that day (smile).
Joey
EDIT: Don't do this when playing against another player.