Within this post you will find three hacks effectively. The are:
1: Unlimited Player Stamina with Lines Changes On! - change 3580 to 6002
This hack stops players on the rink from losing energy. Thus effectively gives the game a mode it never had. "Line Changes: On", with the full energy arcade feel of "Line Changes: Off". Technically this could somewhat be achieved by setting the depletion rate below to 0000.
2: Player/Line Stamina Depletion Rate (Rink) - change 0021 (or 001E) to ????