I think everyone has covered it. You really don't want to get too close. You know where they are and know where they are going (to the beans) Best would be to give yourself a shot somewhere off of that. You don't want to disrupt their patterns.

Putting out some corn might help but if they're going to the beans, it might not be necassary. I'm not familiar with soy beans and how much deer love them so I could be wrong there.