RE: rubs indicate size of deer
Any buck, big or small, can make any rub, big or small. If you find a huge rub, was it made by a spike there often and for long periods of time, or a really big, brute 12 pointer just doin his thing? If you find a small rub, was it a smaller buck there for 15 minutes, or a really big, brute 12 pointer there for 2 minutes.
As mature deer don' t have alot of height difference, the height of a rub isn' t a good factor to figure with either. Know what I mean? There aren' t deer who are suited for say basketball, and others who are canidates for dwarf tossing.
There is no way to really tell!
If you really want to know the size (not necessarily points) of the deer who is rubbing these trees - find a track! Big deer have big tracks. Little deer have little tracks.
Uncle Matt (in Illinois)