Q1
Weak jump shifts are only on after we have opened, or as a first bid-option right?
As in: (1) (1♣)-2♥ and 1♣-(1♥)-2♠. Maybe even the sandwich position (as below Q2).
Edit: (1) is not wjs - but a weak 2 bid (or free-bid as Robert says below). (2) IS a wjs range 3-5hp or alike.
Q2
What about the sandwich position:
(1♣)-p-(1♠)-3♦ - still weak jump? Is this really safe? I am currently using this as constructive good suit, game close if partner got some help. Has worked well - but is this standard?
Q3 - main question
(1♣)-1♦-(p)-?
What does a jump-bid in a major promise? Obviously 6+ card, but the range? Is this a weak jump shift? Is that really safe to use in this situation if the love of wjs is too strong?

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