So I am going to make a mooring block, here's some of my brain farts
Old tinny filled with few old engine blocks chained together cement added, tow it out drill a big hole down she goes.
I have a big concrete mould from when the mall car park was built bit of steel scrap and fill with cement, make a raft from two drums again tow out n sink it.
Someone suggested a steel ballast block from a locomotive which weighs one ton.
A 44 full of scrap n cement.
My mother in law.
2 ford Cleveland V8 blocks chained together,
A Tophat is about 2.5 ton is there a ratio to work out how much weight you need?
Howbout a bathtub full off cement, u could weave reo bar through it.