Rigging
TomCat;I concurr that the vinyl coated wire from the top of your mast is infact your topping lift as described by other owners.As to the block in front of the mast....yes, it could be a part of the spinnaker pole down haul/ or spinnaker pole topping lift- lead aft???....also, look up, & if there is a block at the mast head.......could be spinnaker halyard???[run externaly] to this block and then aft.Hard to say for sure without viewing it directly, but spring stand up blocks usually indicate a halyard or turning block to something aft..There are hundreds of ways to do rigging and many custom set ups...so, exactly what you are looking at is hard to say.Perhaps ask a veteran sailboat owner on your dock who may be able to tell you what he see's.If other Seidelmann 25 owners have the same block than no doubt it a factory item...just not sure what without seeing it, and I am not a 25 owner, so can not offer any other advise.Cheers-Capt.Hawk Hawkinss/v ROGUEWAVE S-34