Just bought heavy duty 2" webbing.
There were many that seemed similar, but they were actually thinner. =/
I have thin 1" nylon webbing, but decided not to use them for the majority of this. I will be redoing my stirrup bars with it. Since its bare, I'll be able to sew it nice n tight instead of finagling it into place, lol.
And already have heavy coated thread, its not cotton, I forget what, but its also strong.
I wonder if spray paint will stick to the tree...Would be nice to use glossy black on it...Have a new can, so I think I'll paint it once I have the straps adjusted and dry fitted. If it chips, ah well, lol.
I have a pond leaf basket that cracked one winter. I used an epoxy, two part putty I had to mix. Works great and I think it also works on polyethylene. I think that's what the leaf basket is also made of.