[1eyedjack]

My normally preferred method:

Double = Take-out (may just be competitive, but can be varied by agreement) - see previous posts in this thread. Lebensohl response to the double by opener.

Other than double, and subject to the override below:
2 suit = natural and weak
2N = Diamonds (any strength if not biddable at 2 level)
3C = Hearts (any strength if not biddable at 2 level)
3D = Stayman with a guard (start with double then cue if required for Stayman without guard)
3H = Spades (at least invite 2S will be available for weak hand)
3S = Clubs (strong)

Override:
2N/3C/3H show Clubs rather than the above if it would otherwise show opponents' suit.

Comparison with Rubensohl:
The 2-step transfers into the red suits allow for a wider range with which responder can compete. If you use (eg) 3C as transfer to D, opener has the choice of accepting or refusing, but refusing takes you beyond 3D. If responder wants to play in 3D regardless then he would be obliged to pass.
The main cost of that policy is that when opponent's suit is Spades you give up on competing to the 3 level in Clubs.
Some might argue that it can also wrong-side a red-suit contract, but I have not noticed that to be a problem in practice, whatever the theory.

All this assumes a natural overcall. Usually 2C (and often 2D) will be artificial, which adds another dimension.