A solution by cf (Time: 6.5s, Blocks used: +13)
Balls
Neat idea! I didn't think of making a raft on the balls.
A solution by AndyB (Time: 6.5s, Blocks used: +23)
5 months later
No idea why this wasn't proposed before. Adding it.
andy added the Proposed Hard tag .
3 months later
A solution by Lunchbox (Time: 7.3s, Blocks used: +11)
a year later
A solution by J (Time: 2.0s, Blocks used: +78)