What I've tended to see with serious competitors at the rinks I've skated at is either 1) they get through the moves tests quickly early in their careers and then already have all the skills with senior-MIF-passing quality by intermediate level and can focus on combining those skating skills with technical elements and presentation skills in their programs at higher levels and improving the quality and difficult of the basic skating as needed to remain competitive as they move up the ladder, or 2) they focus on developing the skills they need to be competitive at each level, including the difficulty of the steps and the quality of the basic skating at a much higher standard than what would pass the test for that level, and then they wait till they're getting ready to move up before learning the patterns and passing the tests.
This got me wondering how prevalent the use of MIF is in early IJS competitions nowadays (by Juvenile FS or Intermediate FS levels). Some good skaters may not need it, but there appear to be some who do work on it.
I dug into real data from the Juvenile Girls competition at USFS National 2018 and what USFS published online on its tests passed (as of Nov 2017). There were 5 girls who passed Sr MIF at Juv Girls Free Skate Nationals. Most have passed either Jr or Sr MIFs, but there are apparently some who have only tested MIF when needed to move up to the next FS competition level.
Place | Element Score | Program Component Score | MIF level passed
1 | 34.38 | 31.29 | Sr MIF
2 | 32.90 | 30.93 | Sr MIF
3 | 32.83 | 30.63 | Int MIF
4 | 27.31 | 27.44 | Sr MIF
5 | 29.67 | 24.76 | Juv MIF
6 | 29.34 | 24.43 | Jr MIF
7 | 26.90 | 27.10 | Nov MIF
8 | 27.42 | 26.92 | Sr MIF
9 | 24.17 | 27.03 | Nov MIF
10 | 19.59 | 26.75 | Sr MIF
11 | 23.23 | 23.02 | Jr MIF
12 | 21.50 | 22.93 | Nov MIF
Furthermore, I tried digging into some USFS test history of some Senior ladies, which is difficult to do because I could only find recent ones posted online, and a lot of Senior ladies passed many years ago. One test history that I found interesting is for Starr Andrews (below). She's a really good skater who appear to have been just passing the MIF tests in order to move up to the next FS competition level.
Pre-Pre MIF (7/10)
Pre-Pre FS (7/10)
Prelim MIF (3/12)
Prelim FS (3/12)
PJ MIF (2/13)
PJ FS (2/13)
Juv MIF (8/13)
Juv FS (8/13)
Int MIF (4/14)
Int FS (4/14)
Nov MIF (3/15)
Nov FS (4/15)
Jr MIF (4/16)
Jr FS (8/16)
Sr MIF (7/17)
Sr FS (7/17)