calls can be very effective...if used right, and at the right time. here (s.d.), the rut has been in full swing for over a week. i expect most of the activity will die down substantially by the weekend...which means if i hunt scrapes, it will likely be unproductive. smaller bucks will still frequent those trails, but the monsters won't. also, calling will be largely unproductive, except does will still respond to bleats.
how does this translate to ohio? not well, really. just an example. if the deer are rutting hard in ohio, a buck grunt might be just the ticket. rattling has proven very ineffective here, but that is because the buck/doe ratio is so poor (you may well do fine w/ antlers).
since you're hunting (family) farmland, you are way ahead. were it me (and i'll be hunting family farmland on sat. am), i'd plant my heinie in a spot where i can see deer as they head to/from feeding/bedding areas. watch a trail that runs into a cornfield or slough. since it is private land and not subject to intense pressure, feel free to get up around 10:30 - 11:00 and try still hunting through corn...look fencerows over carefully...then back to your spot to set the sun...
as for your shotgun, i hope you'll be using slugs (not buckshot).
hope you tip over a good 'un!