HI
I own 25 X 100 binos. They would be completely useless without the parallelogram mount and even that needs a very sturdy surveyors tripod ( I have both ) .
Bintel sell an Orion parallelogram suitable for up to 80mm binos. 100mm are impossible to handhold or use on a normal tripod.
http://www.bintel.com.au/Binoculars/...oductview.aspx
My advice would be to be realistic - get a paralleogram and tripod to suit and 80mm binoculars ( ie 20 X 80 ) .
If you are not in a hurry get a 100mm suitable paralleogram and large tripod. Warning also that the counterweights will be heavy and the act of getting the 100mm mounted on a bracket onto the parralleogram with weights already on it is not for the faint hearted
