oops..didn't mean to post w/o attempting to answer...
no, i think duplication is about the only way. but you can group multiple tracks, press the CTRL key and drag down to duplicate multiple tracks in your hook. but maybe some knows something i don't
i always turn on "lock in time" on my tracks so i know 100% that when i drag to duplicate i don't move the original tracks out of sync.
if you know your mix isn't going to change you could also mix those tracks down to one single track and it would be easier to handle. but i, personally do not recommend it cause if the mix ever DID need to change you couldn't change anything.