valid criticisms! thanks for taking the time to play it and share that. I messed around with the mechanics of the rock so much to the point where, you're right, it kinda became a less important part than I initially imagined it.
In theory though, the rock should help you gauge how tall the cliff is since it changes across each play.
But to add insult to injury to the poor rock mechanic, if you truly want to win, you'll need to use modifiers - 1 of which eliminates the use of the rock entirely lol.
There is a win screen waiting for you though! You're just gonna have to figure out how to cheese the tricks, modifiers, and hidden modifiers to get that 2 milly! gg