Talk:Grappling Hook/@comment-86.81.124.236-20120329150837/@comment-1088372-20120401234454

If you use the grappling hook and press space in-flight, you just keep your momentum.

If you're attached to a block but aren't "in full contact" with it, you simply fall down.

If you're attached to a block "correctly" you instead jump up when pressing space, BUT you can press down+space to simply let go as if you were wrongly attached.

I hope this answers your questions.