In reply to jdsowden: Tape up with a padded plaster. I use the long "tapes" of padded plaster you can buy i.e. Sainsburys fabric dressing stip, which I cut to size and put on at the first sign of a hot spot or rub point.
Experiment with two pairs of socks or different sock combinations too. In winter I use a coolmax sock under a woolen sock. In summer a cotton sock under a woolen sock. Vary the thicknes of the sock you use until you get enough padding.
I find that having a feeling of only just being able to get my feet into the boot with the two pairs of sock on at the start of a walk is a good indication, that I've got the sock thickness right. They seem to compress during the day.
IPP