I think I had the same conversation to myself as I was playing this that Diz did.
I managed to finally figure it all out except for the coin on the ice. I wasn't fast enough to grab it, push the boulder up and hit the pink timer before it smashed that other boulder the pink gate was holding captive.
So I'm sort of curious, was it your intention for us to tramp up, push the boulder out of the gate then go back, tramp back down, grab then coin on the ice?
Either way, great boulder puzzle Keeks, thank you.