sub boot or back shelf?

[only me]

I have just put a 12inch sub in a box on the back shelf on my chim, its sounds the nuts and didn't have to make a single hole, But was wondering if anybody has put one in the boot and does the sound travel ? have found an excellent place to put the amp behind the spare wheel again no holes required and no loss of space. Was wondering though how the sub would sound in the boot any thoughts or comments?