I believe 28 day currency required in club aircraft with the aircraft booked out in your name and you as PIC. Other flying doesn't count as it cannot be corroborated and that includes expense sharing when for instance you fly one leg as PIC and someone else flys another leg as PIC. That's if the rules are the same as the old club rules.
It is an expensive bummer especially when you want to seize the chance to take some mates up for a quick bimble at an opportune moment.
The answer.... operate your own A/C
