We tried RR soy beans and after rather dismal results both in crop performance and deer usage, we switched to a mix of Sunn Hemp and Quail Haven. Of all the annual summer crops we have ever tried, this mix has proven to be the one that has been used more by the deer and held up better to heavy use. Research the Sunn Hemp. I think you will be pleased with what you read. We started planting it in summer of 2014 and have had terrific results. Try some varieties of perennial clovers too. That will give the deer choices.