In my opinion, the easiest way to decide where to place the needed wraps on a freeform cab frame is to first draw around the shape on paper, then wrap the circumference of the cab with a piece of quilters' or painters' tape. Decide what will be the top and then look at the shape of the stone. Where will it need to be supported in the frame the most and what features do you want 'not' to be covered? Experiment with your drawing; if you place your wraps in a certain area and make a pull with the top wire, where will the wire go on the stone? Use a marker and mark the tape where you want the wraps to be, then transfer the marks to your wire bundle (keeping in mind the right and left sides). Frame the cab and then make the appropriate pulls that you had planned with the tape.
Answer contributed by Dale "Cougar" Armstrong