It might be a good idea, it might not. 1/4″ Spectra soft shackle to be used on the rear tow points of my bumper. On this example I have yet to trim the tails, I need to give the shackle a good pull first. one nice thing is that they pack into small spaces unlike a steel shackle. Note: 1/4″ Spectra has breaking strength of 6,000 lbs. tests have shown a soft shackle doesn’t decrease strength (infact, it can be 175% of single line strength). But, 5/16″ Spectra tests at 9,000 lbs, might be better to use 5/16″.
Here is link to instructions to tie this particular style.