Makes his skaters do jumps from a lot of transitions or do a number of jumps within a very limited space and time frame.
The logic being that if you are able to perform the jump under such restrictions, you are definitely going to be able to perform it "normally." It also mimics the added mental difficulty of competing under competition stress in a way.
I agree that's the kind of training Carolina could really benefit from.
And she needs to work on not telegraphing her jumps so massively in any case.