give it a little time - might be a bit early yet to see really obvious buck activity. it is out there, but things haven't kicked into high gear yet.
go to where you are finding trails, and without actually standing on the trail, but close enough to see detail, follow it for a bit. this time of year you'll find 2 trails: 1 obvious one (doe/fawns are primarily on this one), and another that you may not even notice - this is the one to pay attention to if you are after a buck. it will be close to the other trail, will probably paralell it, and the trails are likely to intersect in a few places.
follow enough trails and you'll suddenly start seeing rubs and scrapes.