Hi Capanash, 
There is a do it yourself hydrobath off Goderich Street, Invermay (suburb of Launceston, half hour drive from Westbury) that you can use for $1 per minute. It is just off a side street on the left hand side of the road just before Maccas which is on the other side.  Look for the car wash, it is at the side.  I use it for most shows for my newfie.  Just don't use the flea rinse tho, smells really nice but tends to give my boy the itchies!!! 
Sharyn