A good paste wax will fine the very fine lines but not do much for the pitted spots and deeper scratches.
You can machine buff with product that has both a wax and a compound. I've had good luck with a product called AquaBuff 2000. It must be applied with a machine. Air powered tools are lighter if you have access to one. If you can swing a large electric
buffer around a boat you'll end up with very sore shoulders or some great looking arms. The little toy car buffers won't do the job.