How large are the fish attractors. is it dropped brush 20' x 20' or is it just a couple bushes?

I saw someone posted that you could pull up pretty close to another boat. How close are you talking. I don't want to piss off anyone so I would like to see what other fisherman consider ok behavior. I hear the attractors are marked fairly well.

What is a stake bed and how large are they usually? Do you normally park over them or on the side of them?

Thanks for any information you can provide.

Casedog