If you take John's advice, you may end up in jail and be put on the pedifile list.
Politely ask them to move the trampoline away from the fence as it is a hazard to the children if the can climb your fence from the trampoline.
Also if you can set up a web cam that scans the fence to record incidences when the children do climb on the fence.
Make sure the recording also records the time and date.
If these neighbours complain about your dog barking, you can then prove that it is because some of the children are bothering the dog.
Take out your cock next time they pop there head over the fence and slap the little ****** in the face.
Oh ho....very genuine problem :) Most of us are getting disturb because of our neighbors.
Suggest him to track the location and size by referring to different sites etc just like justtrampolines
Elderly couple moved into 2 bedroom rental next to me. Thay seemed nice at first but now there is multiple adults and kids. I not a mean neighbor and mind my own business what you do in your yard is your business. Recently thay put up a trampoline near my 6 ft fence i m not against kids I have kids too and I don't care about kid jumping on a trampoline but recently my dog was going crazy barking I looked and saw a child hanging off the top of the fence, the parent were sitting close by I told the child not to hang on the fence and politely asked the parent not too let him hang from the fence thay said Sorry. But I'm worried this is going to be a on going problem the kid are not just jumping but hanging one evening a male made a comment he was going to throw hot water on the dog. Has anyone had this problem? And how did you handle it? Thay have a yard twice the size of mine so I don't understand the location but I also respect thay can put it were ever thay want too.