fromageGB, on 2014-November-20, 09:56, said:
I think you are truly making a mistake here. You are ignoring a basic premise of bidding, which, to be fair, seems to get little mention in books about bidding or in the lessons taught to (usually) less than experienced players.
One of the constraints in bidding theory is that there are only so many choices available at any one turn to make a call, yet there are an almost infinite variety of hands to be shown. The problem is sometimes referred to as bidding space, and is one reason pre-empts are so effective...they deprive the other side (and our side as well) of bidding space.
Well, when RHO doubles my partner's 1♠ opening, the opposite has happened: the opponents have actually increased our bidding space! They have given us a low-level call that was otherwise unavailable to us: the redouble. In addition, they have expanded the usages to which we can put other calls, in part because pass is now more flexible (we can almost always say pass and expect to get another chance to bid, which wasn't the case absent the double).
In addition, particularly in methods in which a 2/1 response is strong, the frequency of holding a 2/1 response has declined significantly once we allocate opening values to the first two bidders....give them each 13 (of course both could have less but both could have more, so 13 can be a useful guide for this assessment) and the chances are that we have fewer than 12.
This means that once they double, reserving a 2/1 new suit for a strong natural use becomes an unattractive use of bidding space.
Finally, assume we hold something like Qxx xx Jxxx Jxxx and partner opens 1♠ and RHO doubles. We can't pre-empt (not enough trump for the methods used by most), and a simple raise is an overbid, since (if we don't change methods over the double) we might have Qxx xx KQxx Jxxx and partner may have the values to try for game.
Yet passing is giving up, and even if you played a forcing 1N, it lacks preemptive value and is close to giving up.
There are lots of good methods out there.
My preference, and experience suggests it works well, is to play transfers starting with redouble, which shows (over 1♠) a balanced notrump type of hand with 2 spades and 8+ hcp, unlimited upwards. 1N shows clubs...anywhere from a sort of weak 2 hand to gf or beyond, to be clarified later. And so on, with the transfer into our major as a 'real' raise...and a direct raise as a warning that 'I have crap...bid on at your own risk'.
You can extend this sort of stuff to the 3-level as well if you like (I used to play transfer fit-showing bids with 2 ways to raise to the 3-level, one mixed and the other preemptive).
Whatever method you adopt, and as I say there seem to be number of good ones available, should be designed to take advantage of the bidding space, and the information, provided to you by the double. It is simply bad bridge to claim that it is ok to ignore the double.