[UK-CONTEST] HF Beam/WARC dipole on same mast

[Ian Fugler G4IIY]

I am seeking some advice, please.

I have bought a rotatable dipole for 30/17/12m.  It is about 11m long.  I plan to mount it on the same stubmast as my HF beam (Cushcraft A3S) (separate feeders, of course).  It would only be about 2 or 3 feet below the A3S.

Do I mount the dipole parallel with the A3S boom or parallel with the A3S' elements?  Parallel with the boom would be a nuisance, as the dipole is longer than the boom.  But, being parallel with the boom, there should presumably be less inter-action between the two.

I am sure that others have done this.  I would welcome any thoughts, please.

Thanks, Ian G4IIY