RE: Too much doggie anger!!
As a dog hunter and still hunter, I do my best to keep my dogs on my own place. However, a few years back our club was told by a warden that turning dogs loose on a roadway was legal, as long as it was a public right of way (not private/posted). If your parcel joins a public right of way, (shared road, etc.) then the club is doing nothing wrong according to the law. Ethically maybe, but legally no. This, I suppose, is where all the anger starts. My club dosen't do that sort of thing, but I know of others who do take advantage of this loophole. You will also have to prove they intended to hunt your property, which is impossible to do( per game warden. He said he would refuse to write a ticket on this without absolute proof our club intended to trespass). Sorry about your luck, but some clubs have no morals; I guess it's up to you to confront them with your own lawyer, and force the issue.
It's also true that in areas that have few wardens, the VDGIF relies on hunt clubs to police themselves. Our club does it's best to stay legal, but I know a few who don't reallyseem to care. Whatever you do, please don't resort to shooting dogs, or stealing collars. Just do the right thing and confront them and tell them you and your neighbors will try and take away their lease or sue the landowner. That usually works.
Hope it all works out for everybody.