Has anyone used this succesfully to keep the boat clear of seagulls?
On another thread I read yesterday, talking about topping lifts made from 4mm Dyneema, which generated a distinct and loud humming throughout the boat when under tension, and can be unrigged for sailing or slackened; this could be a practical and permanent fix on two counts with the lift providing an emergency halyard for the main, or as suggested a secondary safety line for tools up the mast.
CD discs are another option that could be clipped on before leaving the boat about 5-6 should do the job.
ianat182