Coralyn, if I haven't put this question in the right place, please delete it and let me know how to properly do things going forward.
My dog has Radius Curve Syndrome, so her front legs are significantly shorter than they should be. Her sits are enthusiastic and attentive, but it's impossible for them to be attractive. Even when she drives right into my legs and I lure her up for a tight tuck sit, she backs away naturally as she tries to gain her footing. I've thought a lot about it, and I think this backing up is related to comfort and habit, but of course it could be that I haven't yet brainstormed the right technique. I'd like to change my criteria for rewarding sits to only rewarding tuck sits, but I don't think I've found the right avenue yet. I've tried platform training, and training with back support, but that's not applicable here, is it? Or maybe it could be a nice bridge? Thanks for listening!