Opening Bid: One Heart or One Spade
We don't need to change how we open a major nor how we respond to one, but we do keep in mind one of the primary advantages of a forcing club system... Immediately we that our partner has fewer than 17 points when she opens 1 or 1, and that's a huge advantage.
Opener's Jump Rebids
From long ago ol' Charlie Goren told bridge players that a jump rebid in our suit promises 16-18 HCP and a jump shift has 19-21 points. We have to redefine those bids... A jump rebid has no more than 16 points and should have at least a 6-card suit. A jump shift by the opener does not have more than 16 points, but does has very good distribution, probably 5-5 in the two bid suits.
Responder's Jump to Game
Normally a jump to game by responder is done with a "Weak Freak" - A hand with few points and at least five trumps. In a forcing club system responder knows that her partner's opening bid has no more than 16 points and might want to close the auction by going directly to game with 10+ points. This treatment should be alerted.
Three Unique Agreements
Below are three treatments that are not part of any other club system, but this is an agreement between Karmen and Denise - these agreements work well and they are fun to play.
1. Responder's Jump Shift ---- 6-8-10 Rule
Most players today use a Jump Shift by responder to show a weak bid, but many expert level players are giving up on this treatment and are now using Soloway Jump Shifts, which shows a hand with at least 16 points. Unfortunately, we don't get that sort of hand very often. We do however, get 6-card suits with 8-10 points frequently.
Universally, players will raise their partner's 1 or 1 opening bid with at least 3-card support and 6-10 HCP. It has been that way since the earliest day of bridge. But you could also show that hand by bidding a forcing 1NT and then raising partner's major, which would leave the immediate raise available for a different agreement. We use it as a low-level game forcing call with possible slam interest.
These are the opener's rebids after responder raises to the 2-level:
A bid of 3NT is Blackwood after any auction where a major suit is established as the trump suit. There is an implicit agreement on the trump suit when the opening bid is a major and responder jumps immediately to 3NT.