No but thought about this sometime back with my 5th element and thought I could just move the 5th line onto 1 of the leading edge lines. Should work, but then why did I buy a 5 line kite and not a bow!!

so decided against it an now very happy with the 5th line. IMHO I would recommend staying with the 5th. Also if you have a Rebel I would still leave it as a 5th line kite.