In reply to carrot_boy (North East Wales MC): Cheers for advice folks. I think there's been enough Springer owners commenting that tiring them out just isn't an option! the fact that one of them always has to be walked on a lead also doesn't help with making them tired!!
they get all the love and affection a dog could hope for at home, they eat well enough, get regular exercise, have toys and regularly curl up on the sofa with us in the evening, there's nothing we can offer them as an incentive to stay.
Could build the fence up, tennis court style, but is that just a temporary measure, until they work out another way to run...the fence we have worked for two years, maybe they'll just look for a way around the new one? maybe wait for someone to come through the gate, then run out behind them? and to what point can we keep modifying the house to suit the dogs?
Its looking more and more like seperation is the only option...might be a dog looking for a new home soon, but how to choose between them? either way it's going to be heartbreaking