Hidding a compressor on an s10

I'm home for spring break(we start late) and I want to work on my truck. I'm thinking about moving my compressor under my truck. Any ideas on how to bolt it up under there? I think it's going to hang like a bat(upside down), but I dunno if that's good. I might even weld it there instead of bolt it.

SO... for those who hide their stuff under their bed, where do you cram it?