Bob, Once the sail is raised the clutch is engaged and the halyard is slack between the clutch and the block and winch , so, no there is no interference with someone sitting there. If the Halyard is led much further down on the cabin top it will impinge on the dorade box forward of the dodger.
Similar to previous photos. Our halyard passes through a lewmar jib sheet car to align it with the electric winch on the coaming. The halyard actually does contact the cabin top winch. Seems to work fine
I found a picture of the set-up I’ve been touting on Phil LeVine’s N36 (good enough to refresh my memory, but not good enough to be worth posting).
I owe Steve an apology – although the jib sheet car used is in a fixed bracket rather than than a pivoting and sliding arrangement like Steve’s and Bill’s, the arrangement is otherwise substantially the same as those two.
Like Bill, Phil’s boat has a winch on the cabintop. I can’t tell from Bill’s picture, but on Phil’s boat the halyard clutch on the cabintop is raised on a pretty big base, causing the line to ride at the intersection of the cabintop winch’s drum and base. This causes the winch to spin a bit as the halyard pulls across it, and gives a relatively clean angle to the coaming. This might (or might not) reduce friction, I don’t know. On the one hand, it’s not running across the cabintop and over a bend. On the other hand, the winch surface has friction and the winch probably isn’t moving as fast as the line.
This might be a place where a low-friction ring or a well-placed block might be the best way to bring the halyard down to the coaming.