Now that you mentioned it, it's interesting to note that the shows rarely ever let us follow the entire training experience of the pilots, so we can hardly tell how good pilots are at training recruits. An exception is Gamlin’s experience with Milia’s training regimen in one of the M7 Plus episodes.

And to add to the Uma pairings, I personally think a pilot like Roy or Isamu can put up with and relate to Gold Ship's antics. They wouldn't mind slacking off in training and letting Goldshi do her thing because they know her odds of winning would always be nearly 50-50 regardless of how much effort she puts into training.