Edit, over a year later: formerly 4.5 stars. This one gave me a lot of trouble when I first solved it, but coming back now I found it to go quite quickly. Still a very nice level. :)
I like that there is a vast choice of plausible blocks to be used on both side. For that level, there is no specific trick: it's really only a matter of choosing the correct blocks.
Ah, very cool solution. Managed to skip all of the 2 offs here by thinking through fundamentals of holes, though I can see many traps have been placed on this barge.
