Headache

This one really gave me some headache due to these hidden parts!

Regarding the mechanism for pushing the block, replace your draggable with a motor (make sure the motor's handle is not attached to the wall). This makes the block pushable but not draggable. I use this mechanism in many of my levels, for example http://mekoramaforum.com/media/pile-up.2656/

Reviewing unfinished levels I found this one. Nice level, thanks!

Spoiler: Shortcut?

I didn't use right side of the level. I throw B to water with the L piece. Tap into the ground hole and quickly move the second L so B goes up to the grass. Using the same L push B to the win zone. Pull hidden draggable to push the ball and pass over it to the win.

@chemi - well done! I think you have rediscovered @cpw's alternative solution.

It's a bit too hidden for how cheatable it is, but that mechanism is just a great puzzle!