If you aren't sure what length lines you need, you may want to consider adjustable lines - or give us a call at 727.656.6569 for advice.
Dakine Fixed Length Lines
If you know what length harness lines you want - these lines are the most foolproof way to go! Just slide them on the boom (you do have to remove the back end) and you are ready to windsurf. Simple hook and loop boom attachment and durable plastic tubing over the lines means they stay where you put them on the boom - no sliding around, swinging, or twisting.