For the tarp end, I would use an end splice (Bitter end goes through the
grommet then through the middle of the line itself and then wraps around
and back through the middle of the better end (6" up) and then it feed
up the center. The end of a pen of a proper fid will help.

Where you tie it, I would use 4 half hitches and then wire tie the
bitter end so it can be undone

Garland Gray II wrote:

I'm sure you know that polypropelene doesn't handle uv well.
Don't know how long you expect to have this tarp erected, but maybe it's
made of the same stuff, so won't matter.

"Courtney Thomas" wrote in message
...

Thanks for the interest of all.

The immediate use is to tie a tarp down so you see my concern about it
staying tied and being easily untied, I was given 600' of 3/8" and other
than dinghy painter have no other use for it, so am going to use it to
secure the tarp.

I'll whip the ends with electrical tape but what particular knot would you
use, given my application ?

Gratefully,
Courtney