En la vieja taberna ya se tiene hablado mucho de este tema.
No sé si conoceis este sistema.
http://www.outils-oceans.com/asp/fr/echelle/
O este otro:
An ideal mast climbing system for the single handed or shorthanded. Safe to use in any conditions! Works on a jammer system, giving the user complete control over their own ascent or descent of the mast. No longer is it necessary to depend on someone at deck level. Handy both on and off the water for maintenance etc.
Saludos
