Hmm, I already tries this with 2 deputy services 
but none of them accepted. You must understand 
that these people usually does deputy service + 
a "normal" job so they have no real time...
The best thing to do is to have e friend or a 
penpal in Japan who'd accept to search for you 
(and then you should invite him/her to come to 
see you for the holidays as Japanese people are 
very fond of travelling).
Hope it might help.