Having an over weight turkey is a problem, fourtunatly I haven't had one, but I have had chicks, whey would run around everywhere and work themselves. I totally agree, starving her would be a terrible idea. The turkeys I had would badly injure them selves, one actually had a leg twisted backwards and I had to pop it back into place! (Yuck!) but the turkey kept twisting it! But because I love my birds, Like you do I would be more than happy to do it a hundered times (if she would finally stop twisting it at hundered times.) if that meant she could live, unfourtunatley while I was on vacation, she died because of her twisted foot and wasn't able to escape a monster snake that broke in. I had a batch of very lazy bantams. I would take one out and make it walk around the yard with me. It took two weeks but they eventually became alert and active. As far as weight goes, it could work, but it would also take time out of your day. Some insane people actually walk their turkeys, chickens or even geese on leashes I have never done it before but it could work too. Hope this helps!