Well done, yes Mike is a really top shelf bloke.
See prior post here;
www.seabreeze.com.au/forums/Sailing/General/Standup-Moorings?page=11.8m orange conduit from Bunnings or wherever, 200mm diameter float from Whitworths located 700mm from lower end, about 2kg mass on lower end. Mass made from large diameter pvc tube capped both ends and filled with rapid set concrete. Sundry ropes etc.