Re: in mast furling issues?
Stumble .... when you say "jam half up", what do you mean ? I've had standard mains jam when slugs have broken but no great problem with furling main raising or lowering.
Minne ... yes undoing head and tack shackles is a pita but our Seldon furler has clip in plates that are fast and easy to remove.
Having had both standard and furling plus being purely a short handed cruiser I'd have to say that furling main is no longer the deal killer I once thought it was. Loss of overall size of sail is my major concern, sail shape doesn't seem to be so much of a problem (we have vertical battens) but I still struggle with control of the outhaul when reducing sail.
“Life is a trick, and you get one chance to learn it.”
― Terry Pratchett, Nation