I had the same quandry, only got danforth with the boat.
asked a friend who is v. experienced, as i didnt like the idea of danforth overnight. He lent me a plough with a heavy bit of chain.
Problem is, overnight wind will likely drop to nothing while boat is moved in whatever direction the water moves, so even if you dig in, very likely the boat will creep slowly to another position then when it comes tight, just release the anchor from the bottom.
Stick all your chain together with the 8mm at the anchor end.
Have a look on gumtree for a decent plough or better (i realise there are much better options but ploughs are common)
queensland this is cheap!!!
www.gumtree.com.au/web/listing/boat-accessories-parts/1339537239victoria: looks like it might be quite big
www.gumtree.com.au/web/listing/boat-accessories-parts/1339511200I have hurt my back raising the anchor without a roller. As Gary says.
I plan to stick a bow roller onto a plank with some padding (maybe a bit of rubber) and then temporarily mount the plank (maybe just lash) on the foredeck when raising the pick - so i can "row" the anchor up rather than leaning out over the pulpit to raise it.