Checkpoints were definitely something we considered since the water can be quite unforgiving. In future we may try to implement a different mechanic. For example, you can land on the surface of water but it limits the strengths of your jumps. Alternatively, we may opt to do multiple shorter levels that present new challenges. For now there is only a single level that requires a bit of practice to complete before the "dead pixels" get too overwhelming. But trust me, I know your pain. Even now I still end up in the water more often than not!