EBU rank: Premier Life Master.
I play my own "Grumpy Club" system in partnership with my wife.
Short (forcing) 1C (11+hcp, no better bid) with forcing 1D response (neg or natural)
Natural 1D , 5 card majors, weak NT.
Multi 2C, 2D and 2NT opening bids, Ekren-style 2H, normal weak 2S.
See website for EBU convention card.