steve is absolutely correct..snowmobiles and 4 wheelers don't bother deer half as much as we think they do.

A couple things come to mind...Those scrapes and rubs are possible more than 2 weeks old. Plus 30 acres is not much land and the deer can move out to another piece of land nearby very easily. If the rut is in full swing there, the does may have left your 30 acres in search of a better food source. Of course the bucks will be in the same piece of woods as the does.

I don't think coyotes are a factor and neither is the hunting pressure. My thoughts still focus on the food source. If they were there before it was because the area offered food, and security. If the security is still offered, food may have become their main cconcern.