Excellent approach and an excellent video.
I used to love doing those type of approaches along with the old "GCA" approach.
The Ground Control Approach is where the controller talks you down to decision height and hopefully you will call "Runway Visual".
A good controllers voice never changes, it is one steady monotone and the approach can be done several ways:
-he can say...on glidepath...turn left one degree...on course...on glidepath...etc...etc
or
-he might say...on glidepath...roll left...now...roll out...now....on course...on glidepath....etc...etc
In most of the worlds military's all types of instrument approaches are practiced and not just one aircraft, but formations of two and three aircraft as well.
Good Instrument Flying, navigation, formation flying and aerobatics all share several common factors, practice, practice, practice, repetition, repetition, repetition and more of the same again and again.
Experience can only come with time and training.
The video you are commenting on has nothing to do with "pucker factor", "nerves of steel" or "guts" but is more in line with a "qualified experienced aviator, current on type flying an instrument approach". :)
Wonderful video Sean and I saw several more there dealing with Float Flying.
Thanks for the site.

Cheers...Happy Landings...Doug