Max Hardy's book Compteitive Bidding with Two Suited Hands (Devyn Press, 1996) talks extensively about the question raised in this thread. Hardy suggests playing Top and Bottom cue bids with the bottom suit being longer or, if equal length, stronger than the top suit; after a minor suit opening, a jump to the other minor shows a hand with a heart suit but a preference for playing in the suit bid; when holding the two top suits (the majors over 1 of a minor, or diamonds and the other major over a major suit opening) one doubles and makes an "equal level correction" if advancer bids the lowest unbid suit; two no-trump shows at least 5-5 distribution in the two lowest unbid suits, and four, five and six no-trumps having more offensive potential. Equal level correction does not imply extra values. If one has a hand he wishes to show extra values and the LOWEST equal level suit, the doubler must jump in that suit at his next opportunity. Hardy also talks about advancing two suited overcalls and doubles. The apporach Hardy reccommends is unorthodox, but my feeling is that it would be very effective if implemented. I have not tried the approach because I haven't found someone to play the system. Comments are welcome.