I recently bought a pair of Sims Guide wading boots, and as some of you may know, they do not come in half sizes. I tried on a smaller size, and I could feel my toe rub when I put forward pressure. I could imagine a nice blister after a long day wading the river. I ended up buying a larger size without trying them on (none in stock) figuring they would fit perfect. When I tried the larger size on (with waders intact), although they felt tight around the ankle, my heel would slip a little and my foot felt like it was swimming around. These are my first pair of nice wading boots, so i want to make them last a long time. Do you think once these are broken in, i will have a little more wiggle room in the smaller size? thanks for the input.