No it does not make any noise.

You can open the hood up to the normal height with prop rod but you cannot open it all the way even after removing the jack. With the jack out if the way, the bolts stick up to high to open all the way. I don't have any plans under the hood for the time being so it's not an issue. I will eventually move it to the tire carrier once I decide on which one I want to go with.

I've seen them mounted to the rear roll bar too but I cannot put it there since I run a Trektop NX. I don't have a hardtop so I'm limited with mounting things to the roll bar. I even had to redo my fire extinguisher mount to stay away from the inside of the windows.