My questions for them would be.
You are in Summer training since May until August right...
What.you do exactly as.training on those 4.months?
You train.how many hours a day? How.many days a week
What was your training ́last Summer.
What you changed on your training this Summer.
You want to improve what.technically exactly
With.those questions you can have a guess of who has the most chances to improve.more in the next few years.and.trying to guess who will be the best at.23 years.ôd for.example
That seems like the kind of questions every single prospect has a pre-prepared answer for and thus doesn't tell you much.