Got the boots, how do I get them to fit?!

[Jacobsroodt]

Thanks to Fat B I am now the proud owner of a set of DIADORA CROSSBOW BOOTS - size 13.
How do I get them to fit comfortably?

They are the right size but a bit tight - pressing in strange places behind the big toes etc.
The outer sides of the boots are leather, but inner sides are plastic. If they were normal leather shoes they would have worn in.

I have thought of standing in hot water with the boots on or taking it to the local Barksole to have it stretched.

Any hints on "walking in" biking boots?

 

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