im reading that as he's asking about the specific dimensions' stated strength...
if you mean you have a 4" handle , 2" risers and a bow of 60" , would a backing work if it doesnt cover the whole length...?...
i dont know what im saying now , but what i have gathered from other peoples bows , is the backing isnt so critical in the handle area , but you do want it on the whole back of the working limb...
i think...
-hov