speaker mounting on hatch cover Options

[Valo666]

Hey, so i was going through my garage today, and came across a bag with a bunch of speakers i bought back when i had my supra. I was thinkin "maybe i should put these in the celi, but, i didnt know where. So i though, what about the Hatch cover?? But then i started thinking, how would that sound?? Would it rattel the crap out of it?? Im still not 100% on weather or not i wanna do this. It was just an idea that came 2 my head.

[Valo666]

This is from 3TST's profile. I know it can be done, im not asking how 2 do it. Im more asking would the vibration from the speakers make the cover rattel alot?? Mine rattels already when i go over a bump in the road, so im askin how much more does it rattel. Also, how does it sound?? Does the soundwaves bouncing off the rear glass project the sound?? Does it absorb it? Does the sound not travel well? Is this a decent spot to mount speakers?? Is it worth my time?? Thats what im asking, not has it been done, can it be done etc..sorry to sound like an ass, but i mean dont just read the title of the post and make your comments off that.