John and others, thank you for posting all this great information which was quite useful to me for my upgrade. Prior to my upgrade, the line was neatly run through bulls-eyes on the inboard side of the bullwarks...but it had it's issues so I decided on an upgrade. Here is my installation using a combination of the Schaefer stanchion blocks and a Harken furler lead-in AirBlock.
The Schaefer stanchion block....Nice solid construction.
To secure it to the Stanchion, line up the hole in the sheave with the hex bolt and do not
over tighten. It doesn't take much to solidly secure it in place.
I'm going to try them up high (7" above the caprail) for now because I want them clearly out of the way of the amid-ship cleats, chocks and headsail travelers but I will likely lower them a bit later.
Harken lead-in furler AirBlock for the pulpit.
I'll remove the old bulls-eyes and fill the holes when I get better weather.