LINE CONTROL TELESCOPING WHISKER POLE Line Control , only available on Forespar whisker poles, is a proven concept in telescoping whisker pole design. So unique, that full patent protection has been secured. The system is simple, and makes the extension and retraction of poles quick and easy. And most amazing of all...the entire operation can be executed while being positioned at the mast. It is no longer necessary to go forward to adjust buttons of any kind - simply uncleat the line and extend or retract (never attempt to adjust while under load). It's quick and easy even with the largest poles.