letter from your lawyer (or you with a good looking letter head) can often put pressure on
give them a time limit or a chance to 'arrange payments in installments (somethign better than nothing)
then say you'll be handing the 'invoice to a collection agency, and costs included etc
& ahh yeah just because you've been awarded, the 'enforcement' is not automatically part of the process, I never received my $65~ for my nicked piss
(burgler received 9 months)