Has anyone appealed a rejection to UCSC within the past five years? Whether or not it was successful.
Here is a post about the UCSC appeals:
https://talk.collegeconfidential.com/t/ucsc-appeal/
What is your basis for an appeal? Do you have documentation that proves your statement(s)?
I do not have any appeal stats to post for you but know they are rarely granted.
Best of luck.