The right rope for hanging?

[L'absent]

Is polypropylene the most suitable material for suspended hanging?

 

[Plato'sCaveDweller]

Polyester is the best, as it's less stretchy and stronger than polypropylene. However, polypropylene still works fine.

 

[Praestat_Mori]

I've read in posts that dock line is the best, about 1/2 inch thick (thumb thick).

 

[purplesky9]

I've read in posts that dock line is the best, about 1/2 inch thick (thumb thick).

What length would be best to get?

 

[Praestat_Mori]

What length would be best to get?

The length depends on your local circumstances. You have to be able to tie a noose, tie it to the anchor point and depending on whether you plan partial or full you need a certain length to hang freely that depends on your room/tree height especially if you plan full. You have to measure and calculate that on your own.