On hands of only moderate strength when a take-out double has been made and you have a good fit with partner's opening, best results are usually obtained by offering an immediate jump raise.
4 NO TRUMP—0
A slam is entirely out of the question. Partner could not have a solid heart suit and a side ace, or else he would not have pre-empted.
4 DIAMONDS—5 POINTS
4 SPADES OR 4 HEARTS—4 POINTS
3 NO TRUMP—3 POINTS
Since partner contracted for nine tricks on his own, a return to three spades would be highly inadequate. The suggested call is four diamonds, throwing the choice back to partner, but contracting for game in either major is acceptable.
2 HEARTS—5 POINTS
3 HEARTS—2 POINTS
4 HEARTS—1 POINT
Any desire to take drastic action could only be induced by possession of the fifth trump, which may look good but has little practical value. This hand is not rich in playing strength and adds up to just about a good single raise.