as far as little bucks not rubbing big trees ,thats not true at all ,ive seen spike bucks rubbing 30 ft high pine trees that are about 15 in in diameter which was right next to the house ,we were gonna set up a stand to bag this big buck which we thought it was but the moultrie determined it was a spike .we were excited for a minute.
ive had button bucks rubbing on trees too with just their bumps and a 1.5 yr old that allready had dropped his antlers but was still rubbing and sniffing on 2in trees, so the size of the tree or buck doesn't matter where here in southern IL