Trampolineologist

A person with an immense knowledge of the construction and fundamentals of trampolines. Someone who classifies as a trampolineologist knows the trampoline inside and out, how they work, how to set them up and how to achieve the highest height obtainable when bouncing.

Bethany: Wow, that guy surely knows how to set up a trampoline!
Meredith: Yes, Bethany, he does. Some say he is a trampolineologist.