Just curious since I haven't used boots with a shank before how much movement should your heal have when walking around. I tried on a pair today and my heal had some movement but not tons. The person helping me said that it would be somewhat normal due to the sole being so firm. I really need to go back and try them on again as ui was only wearing cotton socks and not wool like I would be in the mountains. The boots in question are the lowa Tibet gtx pros.