Hot foot. I can identify with that! I've been trying different things, but even with insoles, I still have problems after about 25 miles, especially if I've been climbing or working harder gears. The only thing that eases the pain for me is to unclip the foot that hurts the most, and pedal from behind the cleat. That helps very quickly, and after a few minutes, I clip back in and unclip the other for a few minutes. Then when I'm clipped in again on both sides, I concentrate on smooth spinning and emphasize the pulling back motion. The unclipping a side at a time also repositions me on the bike and helps keep other areas of my body happy.