The only problem with the wire wheel is you will leave small bits of steel everywhere which rust quickly and are hard to remove as well as unsightly. Steel wire wheels should not be used on the boat's exrerior for this reason. Brass wheels work but are harder to find.
You could try a scotchbrite pad on either a sander or grinder/ They are available in different grades and leave no residue that will rust.
Living aboard in Victoria Harbour