.I believe the accomplished mogul instructor you ae describing is no longer instructing. I'm refering to Frankie Ross , who also taught the freestyle team and is no is longer doing that either. Frankie is - was a Seven Springs legend, nobody IMHO was even close although I did witness another skier (Roy's son) who is in a league of his own as well best Frankie a couple of years ago in the annual mogul contest.
Lots of very capable bumpers at the Springs that are great guys that would be more than glad to help you in the bumps if you asked for help. If you call the ski school desk ask in Frankie's absence who is their best bump instructor.