i have never bow hunted bob cats either but its no different then bow hunting any other predator,you more in likely will not get away with calling from up in a tree.this is where an electronic caller comes in handy,have the speaker at the base of the tree or on the next tree over.if an electronic caller is not an option then a huntin buddy may have to call for you.but just remember if you are targeting bobcats you will have to let the fox and coyote spook for they will come in long before the bobcat.a bobcat is a stalker and may take 30 to 45 minutes or longer sometimes to get with in range.good luck.