Hi, I recently got a new pair of Keen Targhee II Boots after wearing my last pair of boots out. I broke them in for about a week and then went hiking in them. Afterwards, I had some shin pain in both of my legs, probably shin splints. I did buy a half size bigger than I was planning on, after the salesperson at the store talked me into it. I could tell after a few miles they were too big, that my feet were moving around too much in my boots. I do have a history of shin splints, however have not had them in quite some time while hiking. I was wondering if this was because of the boots themselves or just maybe they were too big. Any opinions??