I've done a similar search, though not advertised, without much
luck. Most Transfer Walsh seems direct itself to extending the
lower range of balanced hands after a 1C opening, which has
limited value when playing a weak no-trump. I've been looking
at the possibility of using it to extend the lower range of
unbalanced openings without diluting the advantages of
opener's 15-17 single major raise, though I haven't taken any of it
to the table yet. Here's my start:
1C-1T! : (1D->M=H, 1H->M=S) 4+ cards in M. Opener rebids:
Game forcing raises of M as in KSU.
3M: 18-19, 4 trump. At least as unbalanced as 5422.
2M: 12-14, 4 trump.
At least as unbalanced as 5422.
1M: With 6+ points, responder must rebid.
(a) 18-19, 4 trump. Balanced. Rebid 3M.
(b) 15-17, 4 trump. Rebid 2M. Rebid 2M.
(c) 12-16, 3 trump. Unbalanced. Rebid 2C.
1S: (M=H) Same as 1S rebid in KSU, 0-2 H.
1NT: 15-17 HCP. Could have 3 trump.
2C: As in KSU. Denies 3 trump.
2T: Natural reverse.
Other rebids as in KSU.
Perhaps in your system you could treat the immediate
3M rebid as 18-19, 4 trump and a shortage in OM, the
delayed 3M as the same with a shortage in diamonds,
and the delayed 2NT as the same distributed 5C-4M-2-2.
I assume you have a use for the immediate 2NT rebid.
1C-1T1!
1M-? Opener will rebid after responder's
-1S: 4 Spades.
-2M: 5+ M. Invitational +
-1NT: 5+ M, less than invitational values, or 4M.
1C-2C: Same as KSU.
1C-1S!: 4+D. May be 5-8 balanced.
1NT: 15-18 balanced. May have 4D.
Responder continues with 2D sign-off, 2C game
force, with other rebids invitational.
2D: 4D unbalanced.
2S: Natural reverse.
Other rebids as after 1C-1D in KSU.
1C-1NT!: 5-8, 5C or 3334.
I might add that if you go to 1C promising 2+ and
open all your balanced 15-17's 1M or 1C, then after
1D-1M, 1NT can show the same range of hands as
accepting the transfer after 1C-1T!.
Fred.