Might be too late for this advice, but if not-hunt while it is raining, and also right after it stops raining. The water seems to get them on their feet & moving. Are there utility poles, or light poles, running through the property? If so, pigs like to rub up against them shortly after getting wet. If there is a power line right of way using wooden poles with creosote-check them.
Neighboring properties have corn feeders? if so, hunt that adjoining property line as they will be moving to where the food is after they are done bedding. I'm sure you know this but you need to make sure that your bullets do not cross the boundary fence. 50 Acres is a small place and you are going to need to find out their travel lanes and position yourself such that you can intercept them while they are moving. Or, ask your buddy if you can put up a feeder and then you will be set.
A hog is nothing more than a bullet receptacle.