Flyer,
Soaking is the answer.
Procedure as follows.
1. Always wear two pairs of socks.
2. Run a hot bath.
3. Insert feet into boots and lace very tightly.
4. Stand in the bath, ensuring the boots are completely submerged.
5. Take a book, as you will need to be in this position for about half an hour or so.
6. Get out of the bath and go for a run.
7. Remove the boots only when completely dry.
The boots will now be moulded to your feet, and if you always wear two pairs of socks, you will never have a blister.
As for Rivet Joints’ fifth paragraph, re soft feet, toughen them up.
There are two ways to do this.
1. Procure cheap washing up bowl.
2. Sit in comfy position in front of telly, with naked feet in said bowl.
3. Pour surgical spirit over feet and soak for at least an hour a day.
This can become expensive unless you know a cheap supplier of surgical spirit.
Another option is as follows;
1. Procure cheap washing up bowl.
2. Sit in comfy position in front of telly, with naked feet in said bowl.
3. Pi55 on you feet.
Follow the above, and you will not get a blister – ever.