You have to try this.

[Qwertygiy]

Set a box's bouncyness to 10 and then walk into it.

:lol:

Even better, jump on it.

After setting the TopBoundary's MaxForce to 0.1 and mass to 1.

[Elite]

NOOO YOU GAVE AWAY MY SECRET OF THE TRAMPOLINE

wait.. not fully.

[Qwertygiy]

This isnt a trampoline.

It's a veritable gamesmashing cannon.