Melgsix, first off any evidence he has is inadmissable since it was gotten illegaly. Next time the cops or whoever call or visit, I would ask them why they are bothering you over someone illegaly tresspassing on your property. They should ask him how he attained his info. Then I would say that YOU want to press charges against him for tresspassing.
If he tresspasses when you are not home, pick a day, then carry some big boxes into your shed, before you put them in your shed, open them and place a plate of water in the boxes, and talk to the water for a few minutes,and make sure that you're making him really nosy, then you guys need to pretend to leave for the day but really be home and get those pics. And I wouldn't be quiet about it, you should jump out the door and snap as many pics as you can while he is running, and you should then blackmail him with the pics and tell him you'll be sueing for tresspassing.
And, carry ladders and shovels past his car (oops!) or sit on the hood and chat on your phone.
And you can also get a restraining order for him harrassing you.
My Favorite is that his tires could mysteriously lose air every now and then