On Wed, 27 Apr 2005 12:38:56 -0700, Geoffro wrote:

My question is where do I buy the screw in *thingy*? I
really don't even know what it's called but I'll describe it.

Try an RV/Mobile home dealer. I've seen similar tie downs used for
anchoring mobile trailers in wind areas. This link might give you some
ideas.

http://www.mygreathome.com/fix-it_guide/tiedowns.htm