For safety reasons I always go up on two halyards and would strongly reccomend that you do also, this is after examining the halyard for strength (get your winch man to hoist you so that your toes are just touching the deck then bounce up and down as hard as you can) and any signs of chafe. Satisfied with the integrtity of the climbing halyard and the back up one, I was then winched up the mast, got to the lower set of spreaders and discovered that the casting on the starboard spreader root had a small tear and that the clevis pin was missing the stainless ring; a piece of bent wire had been substituted.
Climbed further and found that the same had happened to the upper starboard spreader bracket, once again a small tear. As the owner of this boat is not happy aloft, this is where my mobile phone comes in useful, providing images that can be down loaded later onto a computer or in this case to my iPad so they can view from the comfort of the cockpit.
No more issues until I got to the top of the mast and found that the inner forestay was badly stranded where the wire entered the rollswaged T-terminal! Inner forestay condemned and as for the tear in the spreader root(s) I suggested that he monitor the bracket(s) over the next few months.