Free: Contests & Raffles.
Walk/bike the roads to find where they crossed the roads, pick the freshest crossing, pick the next road they are likely to cross and go check it out for sign, if sign is fresher then go to the next road they would cross for even fresher sign, when no sign because they haven't crossed yet--then you know which two roads they are in between. Then pick what geographical features and trails in the area to use and move in.
I just jumped a small herd 6 cows and a 4pt bull and they were bedded 50 yds from the road...they bed where they feel safe..most people would of drove right past this spot ....the most success I've had is getting on fresh tracks and just walk them down