Recently on several very hot 90+ days with long rides 8 to 12 hrs, we had a number of riders experience hot spots on feet. It's a combination of hot weather making feet swell and the long hours. I switched from my black shoes to white shoes on a recent 12 hr ride and it was much better. This has me thinking maybe Tri shoes might be better for extremely hot weather? Thoughts? If you have tried this then what shoes did you find the coolest?