Custom sewing a loop on the end of a tow strap?

Find a marina with a good ship's chandler for big sailing boats. Sailmaker's thread comes in grades up to strong enough to hold together 500 square feet of heavy sail in a gale.

A big wet sail can weigh over a hundredwight....force on it can total more than 4000lbs over the whole sail in a Force 8.

You don't want the seams coming apart......strong stuff, that thread.

You use a sailmakers needle with it...an awl with a hole.

Or use bolts and plates.

Metal plates both sides, drilled for the bolts. Tighten the bolts well for a good friction fit when the plates squeeze together.

A square plate as broad as the strap, with the bolts in a triangle is the best way for three bolts. Top of the triangle is towards the loop, with a central bolt a third in from the top edge.

Bottom two bolts are at one third in from both sides, a third in from the bottom edge.

Or use four bolts....third in from top and bottom and both sides to make a square arrangement.

Then you get maximum equality of friction over the whole plate.

Bolts+friction over the plate area gives a big holding strength.

Car clutches, even big heavy truck clutches, work by friction...nothing else.

The force is applied by springs or levers, the friction surfaces do the rest.

Your force is applied by tightening the bolts.

Three 5/8ths Whitworth's steel bolts can hold a ton. Three on the other end is another ton.

Leave a big loop so the sides don't bow out ...no pun intended.

A long thin loop is better than a short fat one....holds it's strength better.

Sail fixings.......search list.

http://www.google.com/search?q=sailmaking+supplies... . . . . . . .

Hook it to the physique. in case you do no longer, you're gonna trash something. With loop type straps, you are going to ought to tie them in place. in case you nevertheless don't sense soft, have your pal call a wrecker. Why your pal may well be driving a civic interior the dirt is previous me, yet, to each his very own!