I don't like single line reefing. I've found that two line reefing
is the way to go.

The stresses on single line reefing cause failures at the tack
on a Hunter 376 I sailed.

How does the Harken version work?

Jonathan Ganz wrote

I finally got the single line reefing system straightened out this
Saturday
after class. I followed the Harken model, but used my own scounged
parts. Seems to work fine.