We've tried a few varieties or rape and had the best luck with 'Bonar Forage' rape. It gets about thigh high tall and has HUGE leaves. During late muzzy season the deer would be concentrated in it vs. the standing corn next to it. They would eventually make it to the corn, but spent their time in the rape first.
Are you planning on leaving the plot the way it is for this season? I'm not sure, but assume it will be past its prime. We try to target late July for planting rape.