I have been clamping now for 2 months. Starting using the mouse pad as wrap but after jelqing and using oil prior the mouse pad just gave away. Use a thick flannel cloth.
Have got to the stage now of using 2 clamps and quite comfortable with it. Only use the 2nd one when really fully erect. After clamping I shower and do some intense streches and have noticed lenght gains. (These are visual lenght gains as I will not measure until 01/0/07). I want to surprise myself.
It is definitely not for newbies though and if anyone is reading this. Please reseach first