Hi,
Welcome to the forum!
I play GF 2-suiters together with transfer preempts. These give the easiest sollution, but you might have to give up the preempt in
♣ - not a big loss btw. Here's how you might play it:
3
♣ = preempt
♦ or GF 55+
♦ and another
3
♦ = preempt
♥ or GF 55+
♥ and a black suit
3
♥ = preempt
♠ or GF 55+
♠-
♣
3
♠ = free bid, might use it as Gambling NT or 4-level preempt
♣, or whatever you want
usually partner responds in function of the preempt suit, a lot of time a step-1 response (bidding the preempt suit). Then you can bid:
3X = GF 55+ X and the promissed suit
3NT = GF 55+
♣ and the promissed suit
advantages:
- preempts are in transfer, so usually the right hand plays
- they are forcing, so you can include even more hands
- gambling 3
♠ is available, but it's brown sticker
disadvantages:
- trf preempt give extra bid(s) to opps
- you lose the 3-level
♣ preempt, unless you use 2NT as preempt
♣ or GF 55+
♣ and another
"It may be rude to leave to go to the bathroom, but it's downright stupid to sit there and piss yourself" - blackshoe