I think it may be worth considering incorporating into the requirements to upgrade an apprentice and performance evaluation. Right now there is no formalized training for a judge. There are only boxes that need to be checked off. (i.e. Tournaments worked, Serving as Chief Judge, Scorer, etc...) Once you have checked off all the boxes you take the practical and written test before becoming a Senior Judge. (And that only applies if you're not an Elite rated skier). I think it would be helpful for someone seeking to upgrade their status to serve as an "apprentice" at one or more L tournament(s) under the supervision of either the CJ or another Senior official where they can learn "best practices". (i.e. Managing responsibilities of being a boat judge, understanding re-ride situations, properly communicating unusual situations such as a zero gate call, etc...).
I also think that with the "apprenticeship" the Senior official in charge should provide a verbal and written evaluation of the judge. (Put them in as Boat Judge and evaluate their performance in changing out ropes/handles, calling in times and scores, communicating with skier, driver, and scorer). Right now there is no evaluation process. I've been to many tournaments (L included) where the boat judge didn't properly perform a basic responsibility. (Usually incorrect boat speed or line length). A boat judge that can't manage those responsibilities really shouldn't be able to upgrade to Senior.
I think there should be more emphasis placed on learning and demonstrating competence on the duties required as a judge. Right now it's about the quantity (number) of tournaments worked in various capacities, and I think it should be more about learning and applying the rules in a consistent way.
Just my two cents....