Thank you all. I was really lucky to stumble into the subject because I was really drawing a blank.
I am tempted by skips as a subject because I love WillMelling's, but how about #repetition. I was slightly inspired by the repetition of the block paving from a snap of a (dual-aerospok'd) hipster in Amsterdam at the weekend.
In other news, given that the boat in my photo didn't move between the photo where it appears to be supporting the car and the one where it is being lifted off, I guess that the weight was on the wall/bottom of the car