One of the most startling conclusions from our upcoming jackline test was that despite the International Sailing Federations (ISAF) generalized approach to jackline standards, the ideal material for a jackline changes as boat length increases. But material selection is just one of many details regarding jacklines that deserves careful thought. If you are re-installing your jacklines or installing for them for the first time, be sure to read our complete test report online. In the meantime, here are some other details to consider.