I'm not much help either but....I taught my 2 to go get their teddy bears when someone comes to the front door! They can't jump up with a teddy bear in their mouth and I figure so what if I get bashed in the knees with a soft toy!!! Jasper, my BC is manic about it and will search for his teddy before greeting anyone. Its kinda like teaching an alternate behaviour thats not conducive to jumping up. Not a complete solution but it works for me