But i dont know exactly where to look for one
I find them in the kitchen draw we always keep a couple of funnels close and handy


On a serious note funnels can be a lot of things from rivers,roads,fields or cliffs.
Where ever there is something that will narrow down an area that the deer travel.
Having a Topo map combined with an areal photoof your hunting area will show you the natural funnels as well as some man made funnels such as roads.