"I will babysit for you 2 hours if you babysit 1 hour for me today". For the coop this would work by paying extra 30 minute coupons. e.g: one hour of baby sitt

"I will babysit for you 2 hours if you babysit 1 hour for me today". For the coop this would work by paying extra 30 minute coupons. e.g: one hour of baby sitting on saturday might be paid with three 30 minute vouchers. Thus encouraging buyers to prioritize weekday outings. No idea if this would solve the liquidity though.