Important rope characteristics for a main sheet are: weight, flexibility and grip. In contrary with a genoa sheet low elongation is less important. The main sheet runs through blocks with a gear ratio, for example a 1:4 purchase. This damps the effect of rope tension and elongation on sail trim. A double braided rope with a core of polyester or core of Stirotex® fibres is a good choice for a mainsheet.
Suggested length, click here
Suggested diameter, click here