I like tinkering with it myself, but it's not for everybody, certainly not every hunter.

I feel that every bowhunter should know his weapon well enough to recognize when it is not shooting right, and know how to determine if he has good arrow flight. He should be intimately familiar with his trajectory and point of impact at all ranges within his chosen maximum shot distance, and be realistic when choosing that maximum limit.

Wether he chooses to set-up his own bow and fix problems himself, or pay someone else to do it matters not.

If indeed you are interested, start with Easton's Tuning Guide.
Read the whole thing, and then you'll have more questions.
Easton Tuning Guide