Joe,
yeah, well now that I know its black,, sigh,, I must say,, its going to take a LOT of work to rub out if the Rustoleum will respond ....
Black is a painters nightmare to cut and polish. I have spent days sanding and polishing black cars only to get them under different lighting and discover that the process of polishing has in fact put its own scratchs into the finish,, ( in the trade those are called swirls,, and they make special compound for working on black finishs for this very reason)
Perhaps like you say, fly the heck out of it. you may try a good coat of HIGH quality wax,, that does tend to mitigate the visibility of the scratchs, then go over that with your glaze,,