Don't ever bother hunting an uncut corn field. Seven feet tall and the deer can hide in there all season. You will not see them. Two years ago the farmers couldn't cut their corn until there was a freeze due to some blight or something (I'm not a farmer). We did not see deer until the last two days of the season because the farmers finally cut it at the end of the week. Those deer just bedded in there, ate their corn cobs, told jokes (about us hunters probably) and had a good old SAFE time.
We hunt a oak tree woods surrounded by marsh and the marsh is surrounded by corn fields. The deer love acorns so it helps. If the corn is cut.