Pilowsky, may I get a discount? I'm not sure it's worth 2 Rands. The auction provided was 2♥ - 2♠ - 3♥ - Double, with no indication of who made what bid. But you have assigned the following seat assignments, so let's run with that: 1.) "Opener preempts with 6-11 HCP. RHO bids 2♠." ......If RHO is the overcaller, this makes opener your partner. 2.) "This may be weak with 6+♠ since a double might be more appropriate if LHO had points." ......No. 2♠ will absolutely NOT be weak here. You do not preempt a preempt. (Preempts 101.) 3.) "Openers partner can either call 4♥ or pass depending on their hand." ......Opener's partner is you since you assigned the initial preempt to your partner. You've listed a binary choice. Why? In the OP auction, opener's partner raised the level of the preempt to the 3-level. That is another obvious choice of actions. There are others as well. 4.) "Over 3♥, RHO should either bid (3♠, 4♠, 3NT, something else or quietly pass." ......RHO already overcalled 2♠ and you, responder, raised partner's preempt to 3♥. For RHO to bid over 3♥, there would not be a double. Did you mean 3♥ Doubled? I'll assume so, though it is at best confusing. 5.) "A double must be for penalties since LHO has already bid their hand - such is the nature of pre-empts." ......Huh? If RHO was overcaller, that makes your partner opener. But here you have LHO somehow making the opening preempt? Maybe they moved during the auction? Where I play, once the auction begins, you are supposed to remain at that position. It's a good rule. If you first get the directions right, and are clear on who made what bid and in which seat they made it (assuming they do not switch seats mid-auction), the probability of understanding the meaning of double goes way up.