Stuck by lighting
Theres a possibility that you will get struck by lighting when you climb your mast. There a possibilty of anything breaking or going wrong.A 5/16 stay wire tensioned to 19 pounds, exerts a downward force of 870 pounds on your mast. since you have at least one on each side your mast already has about 1600 pounds of loading. A few turns of the turnbuckle will double that loading. Knowing this, do you think the mast will hold your body weight?THings also to consider, a empty coke can will support over 300 pounds if loaded evenly, but one touch to the side will collaspe it. 5/16 polyester yacht single braid breaking strength is approx 3000 lb, but a granny knot in it takes away 60% of its strength.Mr science here, uses two halyards( one for hoisting, one for backup), and a climbing harness to go up the mast. if you worry about a pully breaking you should inspect the whole mast for corrosion.