mikl_plkcc, on 2025-July-17, 16:34, said:
I either play the SAYC way of requiring only 3 cards for a limit raise, or use a gadget (3♦) for that. The loss of 1M - 3m, when playing 5-card major and not playing 2/1, is not a great problem as you seldom want to jump shift to the 3-level with a weak hand when opener guarantees 5 in the suit.
You have assigned the price tag to the loss of using a 3
♦ other purposes.
The weak meaning is not the only possible option, we use it as showing a single suiter with exactly inv. strength.
This enables 3D in a seq.
1H - 2D
2H - 3D
as showing a strong single suiter, it also makes it simpler to play a 2/1 as always G/F eliminating some hands,
which would otherwise be forced to over (or under) bid.
Anyway not being able to use a specific bid for other things is a cost. And in a specific situation, you will say
the cost is ok, or you get more bang for the buck, by using the bid, you use it.