Free: Contests & Raffles.
One thing that worked for me (once) and seems to be a trend, is that bears like the thick blackberry bushes and seem to enjoy sitting on their butts in there and just munching on berries. Unfortunately some of the best berries are in 10 year clear cuts which you can't see into for sh*t. If there isn't a high enough point in your area to sit up and look down into the blackberries, take a tree stand up into one of the trees the loggers left so you can get a good vantage downward into the berries. If there is scat around, berries on the bush, and thick brush, you'll eventually see one sneaky snaking around down there.This is only one way to go about it, but it might help you.That'll be 1 bear summer sausage when you get it.
Putting your camera right on a road like that you may as well tie balloons to it with a sign saying "FREE TRAIL CAMERA"