Hi 39........
You might do better, with that sized boat, looking for a canal home either on an unused ramp trolley of which there are a few around or at a pontoon or jetty that there are even more of. Many have power and water too which is very handy as opposed to a mooring in Southport which could be a little (lot) more tricky and perhaps closer to hens teeth! There are some really good deals on airberths too at present; saw a 3.2 tonne one and a 2.3 tonne one recently, both for $9 k which is a very good price for the 2.3 and a steal for the bigger one.
Why would you want to antifoul the boat any way?
Then again there the option of buying a trailer to sit it on and if you haven't got a 4WD you can always rent one of those a lot easier than a trailer (it would seem)
Good luck either way always bearing mind BOAT; "Bring Out Another Thousand" no matter which way you go.
Cheers
Chimo