Dual Tripod Socket Plate?
What quick release plate do you have? If it is a Manfrotto, Black Rapid makes a fitting to connect their straps to the QR plate. The only other option, I am aware of, is to go for an Arca-Swiss plate and get a RRS flat backed clamp.
It is a Sirui T-005 with C-10 ball head. Their website claims Arca compatible quick release plate.