I used to do spreads, but while they are "safer" , they also take away full profit potential. Spreads are better in Hogs and Cattle where you could get whacked on a days on end limit lock move.
I went long Dec Corn 245. This is the beginning of my fall strategy of buying corn and adding on dips. I will switch to the July Contract at some point. I am way underleveraged at this point with no stop in place and the idea is to add positions and reap a large gain on a bullish corn position sometime before next May/July.