Subject: Defense to preemptive jump raises

Nearly everyone these days is playing preemptive 
jump raises in competition.  They work, giving us
brutal problems that are, realistically, unsolvable.
I suggest the following possible defense (or one of
its relatives) to try to combat these monsters in 
at least some of their incarnations.  

In general, I suggest giving up the responsive 
double and playing it as Lebensohl, instead.  Since the 
ACBL, in its infinite wisdom, decrees that we cannot
play artificial bids on the first round of an auction
unless they use a convention, and since raises are natural
and therefore treatments, not conventions, we cannot use
transfers or other such artificial bids.  They, do, however,
let us play artificial doubles.  Here's a possible structure:

(1D)-X-(3D*)-?

X = I want to compete to the three-level in a major,
    but don't want to suggest game unless you have a rock.
    Examples:
	AJ10xx xx xxx xxx
        xxx AQxx x xxxxx
3H,3S = constructive but competitive.  
3NT = to play unless the doubler has a surprise
4C  = same as always. 
4D  = pick a major at the game level 
4H,4S = game going, not normally interested in slam

The takeout doubler normally bid 3H after the Lebresponsive double.
If he has mucho extras, he just answers as in a "Multi" structure.
Assuming that he bids 3H and the opponents are silent (usually,)
continuations by the Lebdoubler are:

Pass = competing in hearts, no game interest
3S   = same, but spades
3NT  = game values, 3NT seems reasonable, but not sure about
       it.  Typically, only one diamond stopper
4D   = moose hands, forcing to the five level
4H,4S = not forcing, but somewhat slam invitational

If they bid, the original takeout doubler can double to 
show extras or bid assuming a multi-3M response.  I've not
worked out all the auctions, but most seem to be very little
problem.

If their suit is not diamonds, similar auctions can develop.
In particular, over 1H-x-3H-?, X is "I want to play 3S, but
not four," and 3S is sound.  3NT is normal, and X followed
by 3NT is takeout for the minors.  I'm not sure about these
auctions, but that's how to get back the responsive double.

Any opinions?  These preemptive auctions are too brutal to 
face unarmed.  I want something that will give us a chance.
Further thought should be posed to what the doubler should do
if advancer passes.  When does he reopen?  Playing normal 
responsive doubles, there's an anomoly wrto that question:

1D-p-3D-p; p-X is takeout and a hand too weak for a normal
takeout double.
1D-X-3D-p; p-X is takeout and extras
1D-X-3D-p; p-p is what you do with normal minimum takeout
doubles.  

It looks to me that this structure lets lots of hands fall
between the cracks, whereas, playing Lebensohl doubles, 
doubler tends to pass more unless he has substantial extras.
No more warm fuzzy feeling when you are opener with an 18-count
and can expect them to bid to the three-level whether or not
they have a fit.  
				--Jeff