Good on ya Brad,
The Top Hat looks great, many happy years of adventuring on the water for you & your family there, enjoy.
Dont feel too bad about grounding there, I also got into a spot of bother in about the same location by the sound of it, although my problem was the water was deeper than I thought (I thought it was 3m infact it was over 9m), dropped the pick amongst moored boats then got hit by a 30kt plus storm, to cut a long story short I got assisstance from Marine Rescue also....a tow out of the mooring area & onto a Police mooring for the night, so all ended well, except being 2 hrs late meeting a mate at the Arms for a beer.
A depth sounder would have prevented the situation then.
Its a tricky little area to get around if you dont know it well.
cheers