This is strong Dyneema that we use on back stay, return loop line and jib and main sheet.
For loop use a loop with an overhand knot, with bowsies just overhand knot at the end will do, fix with thin cyanoacrylate glue or seal the end with fire. Use a thin cyanoacrylate glue to stiffen the line where it is to be cut and use a sharp cutting knife (we use snap off blades to ensure a sharp edge) on a cutting mat to make a clean cut at an angle to the line. This provides a neat needle like a point that can be threaded through bowsies and other fittings.