I came across an interesting alternative - transfer bids after 1M-dbl- After 1H-dbl then 1S is natural, 1nt is a transfer to clubs, 2C transfer to diamonds, 2D is a GOOD raise to 2H and 2H is a weak raise to 2h After 1S-dbl then 1NT is for clubs, 2c for diamonds, 2d for hearts, 2h a GOOD raise to 2S and 2S a weak raise to 2S Similarly at the 3 level, over 1H-dbl- 3d is a good raise to 3H and 3H is a weak raise, over 1S-dbl- 3h is a GOOD raise to 3S and 3S is a weak raise. Now maybe you could use the 2nt bid as game forcing like Jacoby 2nt?