Stilleto 27's use a cable between the bridle mounts on the hulls to move the kite windward and leeward to great effect. I have seen an articulating spinnaker pole on a gulfstream 35 also used to great effect. We were able to carry the kite about 10 deg higer and also able to run off significantly more. On small cats though, I doubt they would be helpful. The apparent wind should never get close to aft of the beam.