sounds like a joker.
FIRST................
post the edges of the property...BUT PROPERELY.
double post boundary corners, post every 100 ft, have name and contact phone number etc. ALSO write in pen."violators will be arrested"
SECOND.......put up a bunch of signs that the property is video monitors, and there are trail cams all over the place.
nothing fancy, just another reason for them to be careful.
THIRD......
on entry ways to your property from theirs , climb high and put a trail cam facing down.......at least 20 feet up.
forth.....post entire entrance to your house, including a sign on your doors.
Chain driveway entrance with lock.
put camera inside house facing entrance etc.
I just bought a couple Wildgame brand cams from Walmart.
2 mega pixel........65.00 tax included.
THE Y WORK AS GOOD AS ANY, and cheaply.
The more signs the better.
LAST...notify without a doubt your local game warden.
He will be happy to hear your story, go over and warn them and do what they do best.......make unethical hunters think twice.
Look up local rules regarding POSTING, and the PROPER , LAWFUL way to do it.
THEY HAVE TO CALL THE NUMBER ON THE SIGN IF THE WANT TO RETRIEVE DEER.......AND IF YOU SAY NO....ITS NO.
THERE ARE TRESSPASS LAWS AND THEY WORK IF YOU WORK THEM.
EVEN GO TO EXTREMES.............GLASS FOR THEM IN TREES.
IF YOU SEE THEM.......GO OUT AND START TARGET SHOOTING , AND SIGHTING GUNS ETC.
BUST THEIR HUNTS AND THEY;LL FIND ANOTHER PLACE.
LAST......ALWAYS CARRY A LOADED GUN WITH YOU. ALWAYS.
SOME GUYS STOP AT NOTHING.
GOOD LUCK


