[Membership 2 Pro] Capturing Credit Card Information

We are offering a membership with a free trial. We would like to capture credit card information up front even if we use the free trial add on. We've also tried to turn off the free trial add on and then add the coupon module and just do a 100% discount on the first payment but it still equals a zero dollar payment which means the credit card is never retrieved. Are there any workarounds that would allow us to take the credit card up front?