To put it simply, follow ebay's protocol and at each opportunity (and corresponding date/timeline) fill out the correct dispute console options by alerting ebay of the fact that the person isn't paying. Remember, that winning an auction is a contract, so you are eligible to receive the payment!
DON'T bend over backwards trying to accommodate the Non Paying Bidder!
If they didn't have access to the money, they shouldn't have entered the auction process! Send lots of emails informing them that they must pay, and that you will use all avenues to enforce payment.
That's my 2 cents worth!