Yes, a wire used as an "artificial ground" cut to the right length(s) should work well. A couple of wires cut for the different parts of the band might be a good idea, 10 is a big band. The MFJ-934 "ground tuner" or something similar could work for you... as would an extra tuner you may already have used in "longwire mode" on the previously mentioned wires.
Mind the high voltages on those wire ends. :)