On 24 Jun, 20:17, Jay Hendry wrote:

I guess various pulley and rope or ratchet straps are out there but none
will do what this seems able to do.

Learn to tie a carter's hitch.

If you do use one of these mis-begotten pieces of crap, then use a
NYLON rope through it, with a bit of stretch to it. Cheap polyester or
polypropylene has too little elasticity in it. Get the slightest flex
in your load or chassis points over a bump and a simple ratchet like
this goes loose instantly, dropping your load off onto the road. A
traditional rope hitch has much more elasticity to it, even tied in
inelastic rope, so it's lless prone to this kind of loosening.