I lined the bed of my 6x12 dump trailer with 1/4" thick HDP (high density poly) sheets.
It comes as 4x8 panels.
In thicker sizes this is often used as a backstop in hockey arenas.
I have seen trailers that have a fairly shallow dump angle and sometimes this would be a problem that is hard to fix.
Built my trailer to lift to 50 deg which is fairly steep and still have had damp soil hang up.
Have you ever figured out your angle when fully raised?
It comes as 4x8 panels.
In thicker sizes this is often used as a backstop in hockey arenas.
I have seen trailers that have a fairly shallow dump angle and sometimes this would be a problem that is hard to fix.
Built my trailer to lift to 50 deg which is fairly steep and still have had damp soil hang up.
Have you ever figured out your angle when fully raised?